Home / 156,108.75-215,430.08-89,040.75

Finding the Fourth Proportional to 156,108.75, 215,430.08 and 89,040.75

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Solution

The fourth proportional to 156,108.75, 215,430.08 and 89,040.75 is: 122,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,108.75 : 215,430.08 = 89,040.75 : x
  2. Step 2: Convert to fraction form
    156,108.75/215,430.08 = 89,040.75/x
  3. Step 3: Cross multiply
    156,108.75x = 215,430.08 × 89,040.75
  4. Step 4: Simplify right side
    156,108.75x = 19,182,055,450.56
  5. Step 5: Solve for x
    x = 19,182,055,450.56/156,108.75
  6. Step 6: Final answer
    x = 122,876.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.