Home / 103,343.20-155,014.80-98,422.45

Finding the Fourth Proportional to 103,343.20, 155,014.80 and 98,422.45

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Solution

The fourth proportional to 103,343.20, 155,014.80 and 98,422.45 is: 147,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,343.20 : 155,014.80 = 98,422.45 : x
  2. Step 2: Convert to fraction form
    103,343.20/155,014.80 = 98,422.45/x
  3. Step 3: Cross multiply
    103,343.20x = 155,014.80 × 98,422.45
  4. Step 4: Simplify right side
    103,343.20x = 15,256,936,402.26
  5. Step 5: Solve for x
    x = 15,256,936,402.26/103,343.20
  6. Step 6: Final answer
    x = 147,633.68

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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.