Home / 147,742.31-221,737.45-76,708.55

Finding the Fourth Proportional to 147,742.31, 221,737.45 and 76,708.55

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Solution

The fourth proportional to 147,742.31, 221,737.45 and 76,708.55 is: 115,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,742.31 : 221,737.45 = 76,708.55 : x
  2. Step 2: Convert to fraction form
    147,742.31/221,737.45 = 76,708.55/x
  3. Step 3: Cross multiply
    147,742.31x = 221,737.45 × 76,708.55
  4. Step 4: Simplify right side
    147,742.31x = 17,009,158,270.20
  5. Step 5: Solve for x
    x = 17,009,158,270.20/147,742.31
  6. Step 6: Final answer
    x = 115,127.20

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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.