Home / 149,487.40-224,231.10-78,312.70

Finding the Fourth Proportional to 149,487.40, 224,231.10 and 78,312.70

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Solution

The fourth proportional to 149,487.40, 224,231.10 and 78,312.70 is: 117,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,487.40 : 224,231.10 = 78,312.70 : x
  2. Step 2: Convert to fraction form
    149,487.40/224,231.10 = 78,312.70/x
  3. Step 3: Cross multiply
    149,487.40x = 224,231.10 × 78,312.70
  4. Step 4: Simplify right side
    149,487.40x = 17,560,142,864.97
  5. Step 5: Solve for x
    x = 17,560,142,864.97/149,487.40
  6. Step 6: Final answer
    x = 117,469.05

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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.