Home / 142,217.89-196,154.28-99,199.60

Finding the Fourth Proportional to 142,217.89, 196,154.28 and 99,199.60

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Solution

The fourth proportional to 142,217.89, 196,154.28 and 99,199.60 is: 136,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,217.89 : 196,154.28 = 99,199.60 : x
  2. Step 2: Convert to fraction form
    142,217.89/196,154.28 = 99,199.60/x
  3. Step 3: Cross multiply
    142,217.89x = 196,154.28 × 99,199.60
  4. Step 4: Simplify right side
    142,217.89x = 19,458,425,505.52
  5. Step 5: Solve for x
    x = 19,458,425,505.52/142,217.89
  6. Step 6: Final answer
    x = 136,821.23

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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.