Home / 147,239.80-220,463.64-76,971.52

Finding the Fourth Proportional to 147,239.80, 220,463.64 and 76,971.52

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Solution

The fourth proportional to 147,239.80, 220,463.64 and 76,971.52 is: 115,250.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,239.80 : 220,463.64 = 76,971.52 : x
  2. Step 2: Convert to fraction form
    147,239.80/220,463.64 = 76,971.52/x
  3. Step 3: Cross multiply
    147,239.80x = 220,463.64 × 76,971.52
  4. Step 4: Simplify right side
    147,239.80x = 16,969,421,475.53
  5. Step 5: Solve for x
    x = 16,969,421,475.53/147,239.80
  6. Step 6: Final answer
    x = 115,250.23

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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.