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Finding the Fourth Proportional to 103,552.72, 155,230.64 and 66,007.40

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Solution

The fourth proportional to 103,552.72, 155,230.64 and 66,007.40 is: 98,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,552.72 : 155,230.64 = 66,007.40 : x
  2. Step 2: Convert to fraction form
    103,552.72/155,230.64 = 66,007.40/x
  3. Step 3: Cross multiply
    103,552.72x = 155,230.64 × 66,007.40
  4. Step 4: Simplify right side
    103,552.72x = 10,246,370,946.74
  5. Step 5: Solve for x
    x = 10,246,370,946.74/103,552.72
  6. Step 6: Final answer
    x = 98,948.35

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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.