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Finding the Fourth Proportional to 187,209.60, 280,925.40 and 68,963.76

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Solution

The fourth proportional to 187,209.60, 280,925.40 and 68,963.76 is: 103,486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,209.60 : 280,925.40 = 68,963.76 : x
  2. Step 2: Convert to fraction form
    187,209.60/280,925.40 = 68,963.76/x
  3. Step 3: Cross multiply
    187,209.60x = 280,925.40 × 68,963.76
  4. Step 4: Simplify right side
    187,209.60x = 19,373,671,863.50
  5. Step 5: Solve for x
    x = 19,373,671,863.50/187,209.60
  6. Step 6: Final answer
    x = 103,486.53

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1.5x scale

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.