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Finding the Fourth Proportional to 103,613.60, 155,650.80 and 100,848.80

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Solution

The fourth proportional to 103,613.60, 155,650.80 and 100,848.80 is: 151,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.60 : 155,650.80 = 100,848.80 : x
  2. Step 2: Convert to fraction form
    103,613.60/155,650.80 = 100,848.80/x
  3. Step 3: Cross multiply
    103,613.60x = 155,650.80 × 100,848.80
  4. Step 4: Simplify right side
    103,613.60x = 15,697,196,399.04
  5. Step 5: Solve for x
    x = 15,697,196,399.04/103,613.60
  6. Step 6: Final answer
    x = 151,497.45

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1.5x scale

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.