Home / 115,058.32-158,780.40-67,320.87

Finding the Fourth Proportional to 115,058.32, 158,780.40 and 67,320.87

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Solution

The fourth proportional to 115,058.32, 158,780.40 and 67,320.87 is: 92,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,058.32 : 158,780.40 = 67,320.87 : x
  2. Step 2: Convert to fraction form
    115,058.32/158,780.40 = 67,320.87/x
  3. Step 3: Cross multiply
    115,058.32x = 158,780.40 × 67,320.87
  4. Step 4: Simplify right side
    115,058.32x = 10,689,235,090.89
  5. Step 5: Solve for x
    x = 10,689,235,090.89/115,058.32
  6. Step 6: Final answer
    x = 92,902.75

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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.