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Finding the Fourth Proportional to 125,697.06, 173,292.16 and 85,340.76

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Solution

The fourth proportional to 125,697.06, 173,292.16 and 85,340.76 is: 117,654.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,697.06 : 173,292.16 = 85,340.76 : x
  2. Step 2: Convert to fraction form
    125,697.06/173,292.16 = 85,340.76/x
  3. Step 3: Cross multiply
    125,697.06x = 173,292.16 × 85,340.76
  4. Step 4: Simplify right side
    125,697.06x = 14,788,883,480.47
  5. Step 5: Solve for x
    x = 14,788,883,480.47/125,697.06
  6. Step 6: Final answer
    x = 117,654.97

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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.