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Finding the Fourth Proportional to 124,355.80, 186,136.80 and 98,111.80

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Solution

The fourth proportional to 124,355.80, 186,136.80 and 98,111.80 is: 146,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,355.80 : 186,136.80 = 98,111.80 : x
  2. Step 2: Convert to fraction form
    124,355.80/186,136.80 = 98,111.80/x
  3. Step 3: Cross multiply
    124,355.80x = 186,136.80 × 98,111.80
  4. Step 4: Simplify right side
    124,355.80x = 18,262,216,494.24
  5. Step 5: Solve for x
    x = 18,262,216,494.24/124,355.80
  6. Step 6: Final answer
    x = 146,854.56

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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.