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Finding the Fourth Proportional to 125,641.95, 173,328.08 and 77,199.90

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Solution

The fourth proportional to 125,641.95, 173,328.08 and 77,199.90 is: 106,500.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,641.95 : 173,328.08 = 77,199.90 : x
  2. Step 2: Convert to fraction form
    125,641.95/173,328.08 = 77,199.90/x
  3. Step 3: Cross multiply
    125,641.95x = 173,328.08 × 77,199.90
  4. Step 4: Simplify right side
    125,641.95x = 13,380,909,769.55
  5. Step 5: Solve for x
    x = 13,380,909,769.55/125,641.95
  6. Step 6: Final answer
    x = 106,500.34

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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.