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Finding the Fourth Proportional to 103,359.60, 155,039.40 and 63,961.20

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Solution

The fourth proportional to 103,359.60, 155,039.40 and 63,961.20 is: 95,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,359.60 : 155,039.40 = 63,961.20 : x
  2. Step 2: Convert to fraction form
    103,359.60/155,039.40 = 63,961.20/x
  3. Step 3: Cross multiply
    103,359.60x = 155,039.40 × 63,961.20
  4. Step 4: Simplify right side
    103,359.60x = 9,916,506,071.28
  5. Step 5: Solve for x
    x = 9,916,506,071.28/103,359.60
  6. Step 6: Final answer
    x = 95,941.80

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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.