Home / 145,152.30-217,728.47-45,321.04

Finding the Fourth Proportional to 145,152.30, 217,728.47 and 45,321.04

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Solution

The fourth proportional to 145,152.30, 217,728.47 and 45,321.04 is: 67,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,152.30 : 217,728.47 = 45,321.04 : x
  2. Step 2: Convert to fraction form
    145,152.30/217,728.47 = 45,321.04/x
  3. Step 3: Cross multiply
    145,152.30x = 217,728.47 × 45,321.04
  4. Step 4: Simplify right side
    145,152.30x = 9,867,680,743.56
  5. Step 5: Solve for x
    x = 9,867,680,743.56/145,152.30
  6. Step 6: Final answer
    x = 67,981.57

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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.