Home / 145,772.02-218,658.03-83,398.78

Finding the Fourth Proportional to 145,772.02, 218,658.03 and 83,398.78

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Solution

The fourth proportional to 145,772.02, 218,658.03 and 83,398.78 is: 125,098.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,772.02 : 218,658.03 = 83,398.78 : x
  2. Step 2: Convert to fraction form
    145,772.02/218,658.03 = 83,398.78/x
  3. Step 3: Cross multiply
    145,772.02x = 218,658.03 × 83,398.78
  4. Step 4: Simplify right side
    145,772.02x = 18,235,813,368.90
  5. Step 5: Solve for x
    x = 18,235,813,368.90/145,772.02
  6. Step 6: Final answer
    x = 125,098.17

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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.