Home / 138,641,051.88-191,330,630.28-76,761,390.24

Finding the Fourth Proportional to 138,641,051.88, 191,330,630.28 and 76,761,390.24

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Solution

The fourth proportional to 138,641,051.88, 191,330,630.28 and 76,761,390.24 is: 105,934,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,641,051.88 : 191,330,630.28 = 76,761,390.24 : x
  2. Step 2: Convert to fraction form
    138,641,051.88/191,330,630.28 = 76,761,390.24/x
  3. Step 3: Cross multiply
    138,641,051.88x = 191,330,630.28 × 76,761,390.24
  4. Step 4: Simplify right side
    138,641,051.88x = 14,686,805,175,788,240
  5. Step 5: Solve for x
    x = 14,686,805,175,788,240/138,641,051.88
  6. Step 6: Final answer
    x = 105,934,028.75

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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.