Home / 127,200.78-175,543.74-70,613.10

Finding the Fourth Proportional to 127,200.78, 175,543.74 and 70,613.10

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Solution

The fourth proportional to 127,200.78, 175,543.74 and 70,613.10 is: 97,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,200.78 : 175,543.74 = 70,613.10 : x
  2. Step 2: Convert to fraction form
    127,200.78/175,543.74 = 70,613.10/x
  3. Step 3: Cross multiply
    127,200.78x = 175,543.74 × 70,613.10
  4. Step 4: Simplify right side
    127,200.78x = 12,395,687,666.99
  5. Step 5: Solve for x
    x = 12,395,687,666.99/127,200.78
  6. Step 6: Final answer
    x = 97,449.78

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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.