Home / 145,436.72-218,081.26-66,483.28

Finding the Fourth Proportional to 145,436.72, 218,081.26 and 66,483.28

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Solution

The fourth proportional to 145,436.72, 218,081.26 and 66,483.28 is: 99,691.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,436.72 : 218,081.26 = 66,483.28 : x
  2. Step 2: Convert to fraction form
    145,436.72/218,081.26 = 66,483.28/x
  3. Step 3: Cross multiply
    145,436.72x = 218,081.26 × 66,483.28
  4. Step 4: Simplify right side
    145,436.72x = 14,498,757,827.04
  5. Step 5: Solve for x
    x = 14,498,757,827.04/145,436.72
  6. Step 6: Final answer
    x = 99,691.18

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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.