Home / 142,691.02-196,913.63-78,160.55

Finding the Fourth Proportional to 142,691.02, 196,913.63 and 78,160.55

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Solution

The fourth proportional to 142,691.02, 196,913.63 and 78,160.55 is: 107,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,691.02 : 196,913.63 = 78,160.55 : x
  2. Step 2: Convert to fraction form
    142,691.02/196,913.63 = 78,160.55/x
  3. Step 3: Cross multiply
    142,691.02x = 196,913.63 × 78,160.55
  4. Step 4: Simplify right side
    142,691.02x = 15,390,876,834.13
  5. Step 5: Solve for x
    x = 15,390,876,834.13/142,691.02
  6. Step 6: Final answer
    x = 107,861.57

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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.