Home / 103,436.64-155,151.90-28,561.38

Finding the Fourth Proportional to 103,436.64, 155,151.90 and 28,561.38

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Solution

The fourth proportional to 103,436.64, 155,151.90 and 28,561.38 is: 42,841.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,436.64 : 155,151.90 = 28,561.38 : x
  2. Step 2: Convert to fraction form
    103,436.64/155,151.90 = 28,561.38/x
  3. Step 3: Cross multiply
    103,436.64x = 155,151.90 × 28,561.38
  4. Step 4: Simplify right side
    103,436.64x = 4,431,352,373.62
  5. Step 5: Solve for x
    x = 4,431,352,373.62/103,436.64
  6. Step 6: Final answer
    x = 42,841.23

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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.