Home / 109,380.80-150,948.64-61,631.52

Finding the Fourth Proportional to 109,380.80, 150,948.64 and 61,631.52

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Solution

The fourth proportional to 109,380.80, 150,948.64 and 61,631.52 is: 85,053.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,380.80 : 150,948.64 = 61,631.52 : x
  2. Step 2: Convert to fraction form
    109,380.80/150,948.64 = 61,631.52/x
  3. Step 3: Cross multiply
    109,380.80x = 150,948.64 × 61,631.52
  4. Step 4: Simplify right side
    109,380.80x = 9,303,194,125.13
  5. Step 5: Solve for x
    x = 9,303,194,125.13/109,380.80
  6. Step 6: Final answer
    x = 85,053.26

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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.