Home / 142,029.91-196,001.13-78,367.71

Finding the Fourth Proportional to 142,029.91, 196,001.13 and 78,367.71

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Solution

The fourth proportional to 142,029.91, 196,001.13 and 78,367.71 is: 108,147.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,029.91 : 196,001.13 = 78,367.71 : x
  2. Step 2: Convert to fraction form
    142,029.91/196,001.13 = 78,367.71/x
  3. Step 3: Cross multiply
    142,029.91x = 196,001.13 × 78,367.71
  4. Step 4: Simplify right side
    142,029.91x = 15,360,159,715.51
  5. Step 5: Solve for x
    x = 15,360,159,715.51/142,029.91
  6. Step 6: Final answer
    x = 108,147.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.