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Finding the Fourth Proportional to 125,528, 173,244 and 72,536

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Solution

The fourth proportional to 125,528, 173,244 and 72,536 is: 100,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,528 : 173,244 = 72,536 : x
  2. Step 2: Convert to fraction form
    125,528/173,244 = 72,536/x
  3. Step 3: Cross multiply
    125,528x = 173,244 × 72,536
  4. Step 4: Simplify right side
    125,528x = 12,566,426,784
  5. Step 5: Solve for x
    x = 12,566,426,784/125,528
  6. Step 6: Final answer
    x = 100,108.56

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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.