Home / 118,901.28-164,085.14-67,920.78

Finding the Fourth Proportional to 118,901.28, 164,085.14 and 67,920.78

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Solution

The fourth proportional to 118,901.28, 164,085.14 and 67,920.78 is: 93,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,901.28 : 164,085.14 = 67,920.78 : x
  2. Step 2: Convert to fraction form
    118,901.28/164,085.14 = 67,920.78/x
  3. Step 3: Cross multiply
    118,901.28x = 164,085.14 × 67,920.78
  4. Step 4: Simplify right side
    118,901.28x = 11,144,790,355.61
  5. Step 5: Solve for x
    x = 11,144,790,355.61/118,901.28
  6. Step 6: Final answer
    x = 93,731.46

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1.5x scale

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.