Home / 145,728.18-218,504.67-98,838.90

Finding the Fourth Proportional to 145,728.18, 218,504.67 and 98,838.90

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Solution

The fourth proportional to 145,728.18, 218,504.67 and 98,838.90 is: 148,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,728.18 : 218,504.67 = 98,838.90 : x
  2. Step 2: Convert to fraction form
    145,728.18/218,504.67 = 98,838.90/x
  3. Step 3: Cross multiply
    145,728.18x = 218,504.67 × 98,838.90
  4. Step 4: Simplify right side
    145,728.18x = 21,596,761,227.66
  5. Step 5: Solve for x
    x = 21,596,761,227.66/145,728.18
  6. Step 6: Final answer
    x = 148,198.94

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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.