Home / 103,500.30-155,250.45-99,563.70

Finding the Fourth Proportional to 103,500.30, 155,250.45 and 99,563.70

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Solution

The fourth proportional to 103,500.30, 155,250.45 and 99,563.70 is: 149,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,500.30 : 155,250.45 = 99,563.70 : x
  2. Step 2: Convert to fraction form
    103,500.30/155,250.45 = 99,563.70/x
  3. Step 3: Cross multiply
    103,500.30x = 155,250.45 × 99,563.70
  4. Step 4: Simplify right side
    103,500.30x = 15,457,309,228.67
  5. Step 5: Solve for x
    x = 15,457,309,228.67/103,500.30
  6. Step 6: Final answer
    x = 149,345.55

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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.