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Finding the Fourth Proportional to 86,742.30, 130,113.45 and 63,414.30

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Solution

The fourth proportional to 86,742.30, 130,113.45 and 63,414.30 is: 95,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,742.30 : 130,113.45 = 63,414.30 : x
  2. Step 2: Convert to fraction form
    86,742.30/130,113.45 = 63,414.30/x
  3. Step 3: Cross multiply
    86,742.30x = 130,113.45 × 63,414.30
  4. Step 4: Simplify right side
    86,742.30x = 8,251,053,352.34
  5. Step 5: Solve for x
    x = 8,251,053,352.34/86,742.30
  6. Step 6: Final answer
    x = 95,121.45

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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.