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Finding the Fourth Proportional to 103,566.18, 155,250.86 and 66,020.86

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Solution

The fourth proportional to 103,566.18, 155,250.86 and 66,020.86 is: 98,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,566.18 : 155,250.86 = 66,020.86 : x
  2. Step 2: Convert to fraction form
    103,566.18/155,250.86 = 66,020.86/x
  3. Step 3: Cross multiply
    103,566.18x = 155,250.86 × 66,020.86
  4. Step 4: Simplify right side
    103,566.18x = 10,249,794,574.71
  5. Step 5: Solve for x
    x = 10,249,794,574.71/103,566.18
  6. Step 6: Final answer
    x = 98,968.55

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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.