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Finding the Fourth Proportional to 125,931, 173,784.78 and 69,342.24

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Solution

The fourth proportional to 125,931, 173,784.78 and 69,342.24 is: 95,692.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931 : 173,784.78 = 69,342.24 : x
  2. Step 2: Convert to fraction form
    125,931/173,784.78 = 69,342.24/x
  3. Step 3: Cross multiply
    125,931x = 173,784.78 × 69,342.24
  4. Step 4: Simplify right side
    125,931x = 12,050,625,923.11
  5. Step 5: Solve for x
    x = 12,050,625,923.11/125,931
  6. Step 6: Final answer
    x = 95,692.29

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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.