Home / 103,865.01-155,686.33-74,192.88

Finding the Fourth Proportional to 103,865.01, 155,686.33 and 74,192.88

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Solution

The fourth proportional to 103,865.01, 155,686.33 and 74,192.88 is: 111,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,865.01 : 155,686.33 = 74,192.88 : x
  2. Step 2: Convert to fraction form
    103,865.01/155,686.33 = 74,192.88/x
  3. Step 3: Cross multiply
    103,865.01x = 155,686.33 × 74,192.88
  4. Step 4: Simplify right side
    103,865.01x = 11,550,817,199.33
  5. Step 5: Solve for x
    x = 11,550,817,199.33/103,865.01
  6. Step 6: Final answer
    x = 111,209.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.