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Finding the Fourth Proportional to 87,314.10, 130,971.15 and 69,818.10

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Solution

The fourth proportional to 87,314.10, 130,971.15 and 69,818.10 is: 104,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,314.10 : 130,971.15 = 69,818.10 : x
  2. Step 2: Convert to fraction form
    87,314.10/130,971.15 = 69,818.10/x
  3. Step 3: Cross multiply
    87,314.10x = 130,971.15 × 69,818.10
  4. Step 4: Simplify right side
    87,314.10x = 9,144,156,847.82
  5. Step 5: Solve for x
    x = 9,144,156,847.82/87,314.10
  6. Step 6: Final answer
    x = 104,727.15

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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.