Home / 145,424.10-218,136.15-75,324.90

Finding the Fourth Proportional to 145,424.10, 218,136.15 and 75,324.90

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Solution

The fourth proportional to 145,424.10, 218,136.15 and 75,324.90 is: 112,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.10 : 218,136.15 = 75,324.90 : x
  2. Step 2: Convert to fraction form
    145,424.10/218,136.15 = 75,324.90/x
  3. Step 3: Cross multiply
    145,424.10x = 218,136.15 × 75,324.90
  4. Step 4: Simplify right side
    145,424.10x = 16,431,083,685.14
  5. Step 5: Solve for x
    x = 16,431,083,685.14/145,424.10
  6. Step 6: Final answer
    x = 112,987.35

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1.5x scale

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.