Home / 103,471.40-155,207.10-76,899.35

Finding the Fourth Proportional to 103,471.40, 155,207.10 and 76,899.35

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Solution

The fourth proportional to 103,471.40, 155,207.10 and 76,899.35 is: 115,349.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,471.40 : 155,207.10 = 76,899.35 : x
  2. Step 2: Convert to fraction form
    103,471.40/155,207.10 = 76,899.35/x
  3. Step 3: Cross multiply
    103,471.40x = 155,207.10 × 76,899.35
  4. Step 4: Simplify right side
    103,471.40x = 11,935,325,105.39
  5. Step 5: Solve for x
    x = 11,935,325,105.39/103,471.40
  6. Step 6: Final answer
    x = 115,349.03

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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.