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Finding the Fourth Proportional to 125,263.52, 172,870.74 and 74,306.42

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Solution

The fourth proportional to 125,263.52, 172,870.74 and 74,306.42 is: 102,547.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,263.52 : 172,870.74 = 74,306.42 : x
  2. Step 2: Convert to fraction form
    125,263.52/172,870.74 = 74,306.42/x
  3. Step 3: Cross multiply
    125,263.52x = 172,870.74 × 74,306.42
  4. Step 4: Simplify right side
    125,263.52x = 12,845,405,812.15
  5. Step 5: Solve for x
    x = 12,845,405,812.15/125,263.52
  6. Step 6: Final answer
    x = 102,547.06

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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.