Home / 115,857.28-159,855.36-70,534.72

Finding the Fourth Proportional to 115,857.28, 159,855.36 and 70,534.72

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Solution

The fourth proportional to 115,857.28, 159,855.36 and 70,534.72 is: 97,321.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,857.28 : 159,855.36 = 70,534.72 : x
  2. Step 2: Convert to fraction form
    115,857.28/159,855.36 = 70,534.72/x
  3. Step 3: Cross multiply
    115,857.28x = 159,855.36 × 70,534.72
  4. Step 4: Simplify right side
    115,857.28x = 11,275,353,058.10
  5. Step 5: Solve for x
    x = 11,275,353,058.10/115,857.28
  6. Step 6: Final answer
    x = 97,321.06

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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.