Home / 142,182.84-196,211.66-78,520.36

Finding the Fourth Proportional to 142,182.84, 196,211.66 and 78,520.36

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Solution

The fourth proportional to 142,182.84, 196,211.66 and 78,520.36 is: 108,357.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,182.84 : 196,211.66 = 78,520.36 : x
  2. Step 2: Convert to fraction form
    142,182.84/196,211.66 = 78,520.36/x
  3. Step 3: Cross multiply
    142,182.84x = 196,211.66 × 78,520.36
  4. Step 4: Simplify right side
    142,182.84x = 15,406,610,179.40
  5. Step 5: Solve for x
    x = 15,406,610,179.40/142,182.84
  6. Step 6: Final answer
    x = 108,357.73

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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.