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Finding the Fourth Proportional to 152,506.80, 228,869.55 and 85,876.20

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Solution

The fourth proportional to 152,506.80, 228,869.55 and 85,876.20 is: 128,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,506.80 : 228,869.55 = 85,876.20 : x
  2. Step 2: Convert to fraction form
    152,506.80/228,869.55 = 85,876.20/x
  3. Step 3: Cross multiply
    152,506.80x = 228,869.55 × 85,876.20
  4. Step 4: Simplify right side
    152,506.80x = 19,654,447,249.71
  5. Step 5: Solve for x
    x = 19,654,447,249.71/152,506.80
  6. Step 6: Final answer
    x = 128,875.87

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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.