Home / 159,917.80-239,531.10-142,407.40

Finding the Fourth Proportional to 159,917.80, 239,531.10 and 142,407.40

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Solution

The fourth proportional to 159,917.80, 239,531.10 and 142,407.40 is: 213,303.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,917.80 : 239,531.10 = 142,407.40 : x
  2. Step 2: Convert to fraction form
    159,917.80/239,531.10 = 142,407.40/x
  3. Step 3: Cross multiply
    159,917.80x = 239,531.10 × 142,407.40
  4. Step 4: Simplify right side
    159,917.80x = 34,111,001,170.14
  5. Step 5: Solve for x
    x = 34,111,001,170.14/159,917.80
  6. Step 6: Final answer
    x = 213,303.34

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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.