Home / 103,617.35-155,334.90-70,229.15

Finding the Fourth Proportional to 103,617.35, 155,334.90 and 70,229.15

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Solution

The fourth proportional to 103,617.35, 155,334.90 and 70,229.15 is: 105,281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.35 : 155,334.90 = 70,229.15 : x
  2. Step 2: Convert to fraction form
    103,617.35/155,334.90 = 70,229.15/x
  3. Step 3: Cross multiply
    103,617.35x = 155,334.90 × 70,229.15
  4. Step 4: Simplify right side
    103,617.35x = 10,909,037,992.34
  5. Step 5: Solve for x
    x = 10,909,037,992.34/103,617.35
  6. Step 6: Final answer
    x = 105,281.96

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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.