Home / 103,818.11-155,727.23-28,938.47

Finding the Fourth Proportional to 103,818.11, 155,727.23 and 28,938.47

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Solution

The fourth proportional to 103,818.11, 155,727.23 and 28,938.47 is: 43,407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,818.11 : 155,727.23 = 28,938.47 : x
  2. Step 2: Convert to fraction form
    103,818.11/155,727.23 = 28,938.47/x
  3. Step 3: Cross multiply
    103,818.11x = 155,727.23 × 28,938.47
  4. Step 4: Simplify right side
    103,818.11x = 4,506,506,850.21
  5. Step 5: Solve for x
    x = 4,506,506,850.21/103,818.11
  6. Step 6: Final answer
    x = 43,407.72

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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.