Home / 140,071.46-193,271.13-79,631.69

Finding the Fourth Proportional to 140,071.46, 193,271.13 and 79,631.69

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Solution

The fourth proportional to 140,071.46, 193,271.13 and 79,631.69 is: 109,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,071.46 : 193,271.13 = 79,631.69 : x
  2. Step 2: Convert to fraction form
    140,071.46/193,271.13 = 79,631.69/x
  3. Step 3: Cross multiply
    140,071.46x = 193,271.13 × 79,631.69
  4. Step 4: Simplify right side
    140,071.46x = 15,390,505,743.75
  5. Step 5: Solve for x
    x = 15,390,505,743.75/140,071.46
  6. Step 6: Final answer
    x = 109,876.10

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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.