Home / 87,446.12-130,487.15-78,021.35

Finding the Fourth Proportional to 87,446.12, 130,487.15 and 78,021.35

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Solution

The fourth proportional to 87,446.12, 130,487.15 and 78,021.35 is: 116,423.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,446.12 : 130,487.15 = 78,021.35 : x
  2. Step 2: Convert to fraction form
    87,446.12/130,487.15 = 78,021.35/x
  3. Step 3: Cross multiply
    87,446.12x = 130,487.15 × 78,021.35
  4. Step 4: Simplify right side
    87,446.12x = 10,180,782,948.22
  5. Step 5: Solve for x
    x = 10,180,782,948.22/87,446.12
  6. Step 6: Final answer
    x = 116,423.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.