Home / 151,520.86-209,108.18-83,537.70

Finding the Fourth Proportional to 151,520.86, 209,108.18 and 83,537.70

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Solution

The fourth proportional to 151,520.86, 209,108.18 and 83,537.70 is: 115,287.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,520.86 : 209,108.18 = 83,537.70 : x
  2. Step 2: Convert to fraction form
    151,520.86/209,108.18 = 83,537.70/x
  3. Step 3: Cross multiply
    151,520.86x = 209,108.18 × 83,537.70
  4. Step 4: Simplify right side
    151,520.86x = 17,468,417,597.42
  5. Step 5: Solve for x
    x = 17,468,417,597.42/151,520.86
  6. Step 6: Final answer
    x = 115,287.21

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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.