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Finding the Fourth Proportional to 125,436.91, 173,100.47 and 70,988.07

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Solution

The fourth proportional to 125,436.91, 173,100.47 and 70,988.07 is: 97,962.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,436.91 : 173,100.47 = 70,988.07 : x
  2. Step 2: Convert to fraction form
    125,436.91/173,100.47 = 70,988.07/x
  3. Step 3: Cross multiply
    125,436.91x = 173,100.47 × 70,988.07
  4. Step 4: Simplify right side
    125,436.91x = 12,288,067,926.45
  5. Step 5: Solve for x
    x = 12,288,067,926.45/125,436.91
  6. Step 6: Final answer
    x = 97,962.14

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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.