Home / 138,590,195,552.64-191,249,520,491.52-78,441,873,120

Finding the Fourth Proportional to 138,590,195,552.64, 191,249,520,491.52 and 78,441,873,120

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Solution

The fourth proportional to 138,590,195,552.64, 191,249,520,491.52 and 78,441,873,120 is: 108,246,983,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,590,195,552.64 : 191,249,520,491.52 = 78,441,873,120 : x
  2. Step 2: Convert to fraction form
    138,590,195,552.64/191,249,520,491.52 = 78,441,873,120/x
  3. Step 3: Cross multiply
    138,590,195,552.64x = 191,249,520,491.52 × 78,441,873,120
  4. Step 4: Simplify right side
    138,590,195,552.64x = 15,001,970,620,656,651,337,728
  5. Step 5: Solve for x
    x = 15,001,970,620,656,651,337,728/138,590,195,552.64
  6. Step 6: Final answer
    x = 108,246,983,567.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.