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Finding the Fourth Proportional to 103,659.85, 155,483.45 and 60,988.95

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Solution

The fourth proportional to 103,659.85, 155,483.45 and 60,988.95 is: 91,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,659.85 : 155,483.45 = 60,988.95 : x
  2. Step 2: Convert to fraction form
    103,659.85/155,483.45 = 60,988.95/x
  3. Step 3: Cross multiply
    103,659.85x = 155,483.45 × 60,988.95
  4. Step 4: Simplify right side
    103,659.85x = 9,482,772,281.64
  5. Step 5: Solve for x
    x = 9,482,772,281.64/103,659.85
  6. Step 6: Final answer
    x = 91,479.70

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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.