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Finding the Fourth Proportional to 125,477.61, 173,133.54 and 71,780.69

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Solution

The fourth proportional to 125,477.61, 173,133.54 and 71,780.69 is: 99,042.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,477.61 : 173,133.54 = 71,780.69 : x
  2. Step 2: Convert to fraction form
    125,477.61/173,133.54 = 71,780.69/x
  3. Step 3: Cross multiply
    125,477.61x = 173,133.54 × 71,780.69
  4. Step 4: Simplify right side
    125,477.61x = 12,427,644,097.67
  5. Step 5: Solve for x
    x = 12,427,644,097.67/125,477.61
  6. Step 6: Final answer
    x = 99,042.72

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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.