Home / 87,613.60-131,420.40-70,117.60

Finding the Fourth Proportional to 87,613.60, 131,420.40 and 70,117.60

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Solution

The fourth proportional to 87,613.60, 131,420.40 and 70,117.60 is: 105,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.60 : 131,420.40 = 70,117.60 : x
  2. Step 2: Convert to fraction form
    87,613.60/131,420.40 = 70,117.60/x
  3. Step 3: Cross multiply
    87,613.60x = 131,420.40 × 70,117.60
  4. Step 4: Simplify right side
    87,613.60x = 9,214,883,039.04
  5. Step 5: Solve for x
    x = 9,214,883,039.04/87,613.60
  6. Step 6: Final answer
    x = 105,176.40

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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.