Home / 153,403.20-230,127.48-78,565.68

Finding the Fourth Proportional to 153,403.20, 230,127.48 and 78,565.68

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Solution

The fourth proportional to 153,403.20, 230,127.48 and 78,565.68 is: 117,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,403.20 : 230,127.48 = 78,565.68 : x
  2. Step 2: Convert to fraction form
    153,403.20/230,127.48 = 78,565.68/x
  3. Step 3: Cross multiply
    153,403.20x = 230,127.48 × 78,565.68
  4. Step 4: Simplify right side
    153,403.20x = 18,080,121,952.89
  5. Step 5: Solve for x
    x = 18,080,121,952.89/153,403.20
  6. Step 6: Final answer
    x = 117,860.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.