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Finding the Fourth Proportional to 125,862.80, 173,670.80 and 72,137.52

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Solution

The fourth proportional to 125,862.80, 173,670.80 and 72,137.52 is: 99,538.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,862.80 : 173,670.80 = 72,137.52 : x
  2. Step 2: Convert to fraction form
    125,862.80/173,670.80 = 72,137.52/x
  3. Step 3: Cross multiply
    125,862.80x = 173,670.80 × 72,137.52
  4. Step 4: Simplify right side
    125,862.80x = 12,528,180,808.42
  5. Step 5: Solve for x
    x = 12,528,180,808.42/125,862.80
  6. Step 6: Final answer
    x = 99,538.39

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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.