Home / 91,275.13-136,925.67-28,100.53

Finding the Fourth Proportional to 91,275.13, 136,925.67 and 28,100.53

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Solution

The fourth proportional to 91,275.13, 136,925.67 and 28,100.53 is: 42,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,275.13 : 136,925.67 = 28,100.53 : x
  2. Step 2: Convert to fraction form
    91,275.13/136,925.67 = 28,100.53/x
  3. Step 3: Cross multiply
    91,275.13x = 136,925.67 × 28,100.53
  4. Step 4: Simplify right side
    91,275.13x = 3,847,683,212.98
  5. Step 5: Solve for x
    x = 3,847,683,212.98/91,275.13
  6. Step 6: Final answer
    x = 42,154.78

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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.