Home / 153,139.42-211,333.08-89,463.70

Finding the Fourth Proportional to 153,139.42, 211,333.08 and 89,463.70

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Solution

The fourth proportional to 153,139.42, 211,333.08 and 89,463.70 is: 123,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,139.42 : 211,333.08 = 89,463.70 : x
  2. Step 2: Convert to fraction form
    153,139.42/211,333.08 = 89,463.70/x
  3. Step 3: Cross multiply
    153,139.42x = 211,333.08 × 89,463.70
  4. Step 4: Simplify right side
    153,139.42x = 18,906,639,269.20
  5. Step 5: Solve for x
    x = 18,906,639,269.20/153,139.42
  6. Step 6: Final answer
    x = 123,460.30

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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.