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Finding the Fourth Proportional to 185,689.60, 278,468.16 and 67,330.24

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Solution

The fourth proportional to 185,689.60, 278,468.16 and 67,330.24 is: 100,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,689.60 : 278,468.16 = 67,330.24 : x
  2. Step 2: Convert to fraction form
    185,689.60/278,468.16 = 67,330.24/x
  3. Step 3: Cross multiply
    185,689.60x = 278,468.16 × 67,330.24
  4. Step 4: Simplify right side
    185,689.60x = 18,749,328,045.16
  5. Step 5: Solve for x
    x = 18,749,328,045.16/185,689.60
  6. Step 6: Final answer
    x = 100,971.34

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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.