Home / 142,045.60-196,034.76-78,397.20

Finding the Fourth Proportional to 142,045.60, 196,034.76 and 78,397.20

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Solution

The fourth proportional to 142,045.60, 196,034.76 and 78,397.20 is: 108,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,045.60 : 196,034.76 = 78,397.20 : x
  2. Step 2: Convert to fraction form
    142,045.60/196,034.76 = 78,397.20/x
  3. Step 3: Cross multiply
    142,045.60x = 196,034.76 × 78,397.20
  4. Step 4: Simplify right side
    142,045.60x = 15,368,576,286.67
  5. Step 5: Solve for x
    x = 15,368,576,286.67/142,045.60
  6. Step 6: Final answer
    x = 108,194.67

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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.