Home / 103,748.40-155,622.60-99,374.40

Finding the Fourth Proportional to 103,748.40, 155,622.60 and 99,374.40

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Solution

The fourth proportional to 103,748.40, 155,622.60 and 99,374.40 is: 149,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,748.40 : 155,622.60 = 99,374.40 : x
  2. Step 2: Convert to fraction form
    103,748.40/155,622.60 = 99,374.40/x
  3. Step 3: Cross multiply
    103,748.40x = 155,622.60 × 99,374.40
  4. Step 4: Simplify right side
    103,748.40x = 15,464,902,501.44
  5. Step 5: Solve for x
    x = 15,464,902,501.44/103,748.40
  6. Step 6: Final answer
    x = 149,061.60

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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.