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Finding the Fourth Proportional to 103,654.16, 155,480.73 and 40,480.70

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Solution

The fourth proportional to 103,654.16, 155,480.73 and 40,480.70 is: 60,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,654.16 : 155,480.73 = 40,480.70 : x
  2. Step 2: Convert to fraction form
    103,654.16/155,480.73 = 40,480.70/x
  3. Step 3: Cross multiply
    103,654.16x = 155,480.73 × 40,480.70
  4. Step 4: Simplify right side
    103,654.16x = 6,293,968,009.51
  5. Step 5: Solve for x
    x = 6,293,968,009.51/103,654.16
  6. Step 6: Final answer
    x = 60,720.85

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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.