Home / 145,367.64-218,136.05-61,121.70

Finding the Fourth Proportional to 145,367.64, 218,136.05 and 61,121.70

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Solution

The fourth proportional to 145,367.64, 218,136.05 and 61,121.70 is: 91,718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,367.64 : 218,136.05 = 61,121.70 : x
  2. Step 2: Convert to fraction form
    145,367.64/218,136.05 = 61,121.70/x
  3. Step 3: Cross multiply
    145,367.64x = 218,136.05 × 61,121.70
  4. Step 4: Simplify right side
    145,367.64x = 13,332,846,207.29
  5. Step 5: Solve for x
    x = 13,332,846,207.29/145,367.64
  6. Step 6: Final answer
    x = 91,718.12

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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.