Home / 123,869.30-185,505.78-70,430.55

Finding the Fourth Proportional to 123,869.30, 185,505.78 and 70,430.55

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Solution

The fourth proportional to 123,869.30, 185,505.78 and 70,430.55 is: 105,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,869.30 : 185,505.78 = 70,430.55 : x
  2. Step 2: Convert to fraction form
    123,869.30/185,505.78 = 70,430.55/x
  3. Step 3: Cross multiply
    123,869.30x = 185,505.78 × 70,430.55
  4. Step 4: Simplify right side
    123,869.30x = 13,065,274,113.58
  5. Step 5: Solve for x
    x = 13,065,274,113.58/123,869.30
  6. Step 6: Final answer
    x = 105,476.29

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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.