Home / 128,570,985.84-177,429,262.52-69,834,797.92

Finding the Fourth Proportional to 128,570,985.84, 177,429,262.52 and 69,834,797.92

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Solution

The fourth proportional to 128,570,985.84, 177,429,262.52 and 69,834,797.92 is: 96,372,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,570,985.84 : 177,429,262.52 = 69,834,797.92 : x
  2. Step 2: Convert to fraction form
    128,570,985.84/177,429,262.52 = 69,834,797.92/x
  3. Step 3: Cross multiply
    128,570,985.84x = 177,429,262.52 × 69,834,797.92
  4. Step 4: Simplify right side
    128,570,985.84x = 12,390,736,693,178,832
  5. Step 5: Solve for x
    x = 12,390,736,693,178,832/128,570,985.84
  6. Step 6: Final answer
    x = 96,372,728.36

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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.