Home / 125,897.72-173,728.24-72,170.40

Finding the Fourth Proportional to 125,897.72, 173,728.24 and 72,170.40

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Solution

The fourth proportional to 125,897.72, 173,728.24 and 72,170.40 is: 99,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,897.72 : 173,728.24 = 72,170.40 : x
  2. Step 2: Convert to fraction form
    125,897.72/173,728.24 = 72,170.40/x
  3. Step 3: Cross multiply
    125,897.72x = 173,728.24 × 72,170.40
  4. Step 4: Simplify right side
    125,897.72x = 12,538,036,572.10
  5. Step 5: Solve for x
    x = 12,538,036,572.10/125,897.72
  6. Step 6: Final answer
    x = 99,589.07

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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.