Home / 145,419.30-218,131.68-45,577.28

Finding the Fourth Proportional to 145,419.30, 218,131.68 and 45,577.28

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Solution

The fourth proportional to 145,419.30, 218,131.68 and 45,577.28 is: 68,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,419.30 : 218,131.68 = 45,577.28 : x
  2. Step 2: Convert to fraction form
    145,419.30/218,131.68 = 45,577.28/x
  3. Step 3: Cross multiply
    145,419.30x = 218,131.68 × 45,577.28
  4. Step 4: Simplify right side
    145,419.30x = 9,941,847,565.57
  5. Step 5: Solve for x
    x = 9,941,847,565.57/145,419.30
  6. Step 6: Final answer
    x = 68,366.77

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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.