Home / 142,634.95-196,839.23-78,106.90

Finding the Fourth Proportional to 142,634.95, 196,839.23 and 78,106.90

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Solution

The fourth proportional to 142,634.95, 196,839.23 and 78,106.90 is: 107,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,634.95 : 196,839.23 = 78,106.90 : x
  2. Step 2: Convert to fraction form
    142,634.95/196,839.23 = 78,106.90/x
  3. Step 3: Cross multiply
    142,634.95x = 196,839.23 × 78,106.90
  4. Step 4: Simplify right side
    142,634.95x = 15,374,502,053.69
  5. Step 5: Solve for x
    x = 15,374,502,053.69/142,634.95
  6. Step 6: Final answer
    x = 107,789.16

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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.