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Finding the Fourth Proportional to 121,803.71, 168,088.16 and 67,358.25

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Solution

The fourth proportional to 121,803.71, 168,088.16 and 67,358.25 is: 92,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,803.71 : 168,088.16 = 67,358.25 : x
  2. Step 2: Convert to fraction form
    121,803.71/168,088.16 = 67,358.25/x
  3. Step 3: Cross multiply
    121,803.71x = 168,088.16 × 67,358.25
  4. Step 4: Simplify right side
    121,803.71x = 11,322,123,966.53
  5. Step 5: Solve for x
    x = 11,322,123,966.53/121,803.71
  6. Step 6: Final answer
    x = 92,953.86

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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.