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Finding the Fourth Proportional to 86,516.10, 129,774.15 and 86,516.10

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Solution

The fourth proportional to 86,516.10, 129,774.15 and 86,516.10 is: 129,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516.10 : 129,774.15 = 86,516.10 : x
  2. Step 2: Convert to fraction form
    86,516.10/129,774.15 = 86,516.10/x
  3. Step 3: Cross multiply
    86,516.10x = 129,774.15 × 86,516.10
  4. Step 4: Simplify right side
    86,516.10x = 11,227,553,338.82
  5. Step 5: Solve for x
    x = 11,227,553,338.82/86,516.10
  6. Step 6: Final answer
    x = 129,774.15

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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.