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Finding the Fourth Proportional to 103,658, 155,480.85 and 60,987.41

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Solution

The fourth proportional to 103,658, 155,480.85 and 60,987.41 is: 91,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,658 : 155,480.85 = 60,987.41 : x
  2. Step 2: Convert to fraction form
    103,658/155,480.85 = 60,987.41/x
  3. Step 3: Cross multiply
    103,658x = 155,480.85 × 60,987.41
  4. Step 4: Simplify right side
    103,658x = 9,482,374,346.10
  5. Step 5: Solve for x
    x = 9,482,374,346.10/103,658
  6. Step 6: Final answer
    x = 91,477.50

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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.