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Finding the Fourth Proportional to 125,642.95, 173,329.46 and 77,200.90

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Solution

The fourth proportional to 125,642.95, 173,329.46 and 77,200.90 is: 106,501.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,642.95 : 173,329.46 = 77,200.90 : x
  2. Step 2: Convert to fraction form
    125,642.95/173,329.46 = 77,200.90/x
  3. Step 3: Cross multiply
    125,642.95x = 173,329.46 × 77,200.90
  4. Step 4: Simplify right side
    125,642.95x = 13,381,190,308.51
  5. Step 5: Solve for x
    x = 13,381,190,308.51/125,642.95
  6. Step 6: Final answer
    x = 106,501.72

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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.