Home / 86,423.90-129,417.15-82,487.30

Finding the Fourth Proportional to 86,423.90, 129,417.15 and 82,487.30

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Solution

The fourth proportional to 86,423.90, 129,417.15 and 82,487.30 is: 123,522.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,423.90 : 129,417.15 = 82,487.30 : x
  2. Step 2: Convert to fraction form
    86,423.90/129,417.15 = 82,487.30/x
  3. Step 3: Cross multiply
    86,423.90x = 129,417.15 × 82,487.30
  4. Step 4: Simplify right side
    86,423.90x = 10,675,271,277.20
  5. Step 5: Solve for x
    x = 10,675,271,277.20/86,423.90
  6. Step 6: Final answer
    x = 123,522.21

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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.