Home / 145,024.13-200,136.75-81,366.64

Finding the Fourth Proportional to 145,024.13, 200,136.75 and 81,366.64

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Solution

The fourth proportional to 145,024.13, 200,136.75 and 81,366.64 is: 112,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,024.13 : 200,136.75 = 81,366.64 : x
  2. Step 2: Convert to fraction form
    145,024.13/200,136.75 = 81,366.64/x
  3. Step 3: Cross multiply
    145,024.13x = 200,136.75 × 81,366.64
  4. Step 4: Simplify right side
    145,024.13x = 16,284,454,888.02
  5. Step 5: Solve for x
    x = 16,284,454,888.02/145,024.13
  6. Step 6: Final answer
    x = 112,287.90

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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.