Home / 98,132.72-135,423.18-53,420.72

Finding the Fourth Proportional to 98,132.72, 135,423.18 and 53,420.72

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Solution

The fourth proportional to 98,132.72, 135,423.18 and 53,420.72 is: 73,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,132.72 : 135,423.18 = 53,420.72 : x
  2. Step 2: Convert to fraction form
    98,132.72/135,423.18 = 53,420.72/x
  3. Step 3: Cross multiply
    98,132.72x = 135,423.18 × 53,420.72
  4. Step 4: Simplify right side
    98,132.72x = 7,234,403,780.29
  5. Step 5: Solve for x
    x = 7,234,403,780.29/98,132.72
  6. Step 6: Final answer
    x = 73,720.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.