Home / 115,430.40-173,109.60-45,331.20

Finding the Fourth Proportional to 115,430.40, 173,109.60 and 45,331.20

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Solution

The fourth proportional to 115,430.40, 173,109.60 and 45,331.20 is: 67,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.40 : 173,109.60 = 45,331.20 : x
  2. Step 2: Convert to fraction form
    115,430.40/173,109.60 = 45,331.20/x
  3. Step 3: Cross multiply
    115,430.40x = 173,109.60 × 45,331.20
  4. Step 4: Simplify right side
    115,430.40x = 7,847,265,899.52
  5. Step 5: Solve for x
    x = 7,847,265,899.52/115,430.40
  6. Step 6: Final answer
    x = 67,982.66

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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.