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Finding the Fourth Proportional to 125,113.94, 187,200.06 and 87,746.95

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Solution

The fourth proportional to 125,113.94, 187,200.06 and 87,746.95 is: 131,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.94 : 187,200.06 = 87,746.95 : x
  2. Step 2: Convert to fraction form
    125,113.94/187,200.06 = 87,746.95/x
  3. Step 3: Cross multiply
    125,113.94x = 187,200.06 × 87,746.95
  4. Step 4: Simplify right side
    125,113.94x = 16,426,234,304.82
  5. Step 5: Solve for x
    x = 16,426,234,304.82/125,113.94
  6. Step 6: Final answer
    x = 131,290.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.