Home / 142,117.92-212,973.48-104,382

Finding the Fourth Proportional to 142,117.92, 212,973.48 and 104,382

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Solution

The fourth proportional to 142,117.92, 212,973.48 and 104,382 is: 156,423.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,117.92 : 212,973.48 = 104,382 : x
  2. Step 2: Convert to fraction form
    142,117.92/212,973.48 = 104,382/x
  3. Step 3: Cross multiply
    142,117.92x = 212,973.48 × 104,382
  4. Step 4: Simplify right side
    142,117.92x = 22,230,597,789.36
  5. Step 5: Solve for x
    x = 22,230,597,789.36/142,117.92
  6. Step 6: Final answer
    x = 156,423.61

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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.