Home / 115,060.45-158,756.66-69,728.50

Finding the Fourth Proportional to 115,060.45, 158,756.66 and 69,728.50

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Solution

The fourth proportional to 115,060.45, 158,756.66 and 69,728.50 is: 96,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,060.45 : 158,756.66 = 69,728.50 : x
  2. Step 2: Convert to fraction form
    115,060.45/158,756.66 = 69,728.50/x
  3. Step 3: Cross multiply
    115,060.45x = 158,756.66 × 69,728.50
  4. Step 4: Simplify right side
    115,060.45x = 11,069,862,985.09
  5. Step 5: Solve for x
    x = 11,069,862,985.09/115,060.45
  6. Step 6: Final answer
    x = 96,209.11

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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.