Home / 153,139.48-211,349.10-89,498.68

Finding the Fourth Proportional to 153,139.48, 211,349.10 and 89,498.68

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Solution

The fourth proportional to 153,139.48, 211,349.10 and 89,498.68 is: 123,517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,139.48 : 211,349.10 = 89,498.68 : x
  2. Step 2: Convert to fraction form
    153,139.48/211,349.10 = 89,498.68/x
  3. Step 3: Cross multiply
    153,139.48x = 211,349.10 × 89,498.68
  4. Step 4: Simplify right side
    153,139.48x = 18,915,465,469.19
  5. Step 5: Solve for x
    x = 18,915,465,469.19/153,139.48
  6. Step 6: Final answer
    x = 123,517.89

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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.