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Finding the Fourth Proportional to 125,808.62, 173,549.71 and 74,785.06

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Solution

The fourth proportional to 125,808.62, 173,549.71 and 74,785.06 is: 103,164.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,808.62 : 173,549.71 = 74,785.06 : x
  2. Step 2: Convert to fraction form
    125,808.62/173,549.71 = 74,785.06/x
  3. Step 3: Cross multiply
    125,808.62x = 173,549.71 × 74,785.06
  4. Step 4: Simplify right side
    125,808.62x = 12,978,925,019.87
  5. Step 5: Solve for x
    x = 12,978,925,019.87/125,808.62
  6. Step 6: Final answer
    x = 103,164.04

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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.