Home / 140,122.59-193,368.12-79,693.16

Finding the Fourth Proportional to 140,122.59, 193,368.12 and 79,693.16

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Solution

The fourth proportional to 140,122.59, 193,368.12 and 79,693.16 is: 109,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,122.59 : 193,368.12 = 79,693.16 : x
  2. Step 2: Convert to fraction form
    140,122.59/193,368.12 = 79,693.16/x
  3. Step 3: Cross multiply
    140,122.59x = 193,368.12 × 79,693.16
  4. Step 4: Simplify right side
    140,122.59x = 15,410,115,559.22
  5. Step 5: Solve for x
    x = 15,410,115,559.22/140,122.59
  6. Step 6: Final answer
    x = 109,975.95

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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.