Home / 115,210.80-158,988.36-64,223.28

Finding the Fourth Proportional to 115,210.80, 158,988.36 and 64,223.28

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Solution

The fourth proportional to 115,210.80, 158,988.36 and 64,223.28 is: 88,626.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,210.80 : 158,988.36 = 64,223.28 : x
  2. Step 2: Convert to fraction form
    115,210.80/158,988.36 = 64,223.28/x
  3. Step 3: Cross multiply
    115,210.80x = 158,988.36 × 64,223.28
  4. Step 4: Simplify right side
    115,210.80x = 10,210,753,961.02
  5. Step 5: Solve for x
    x = 10,210,753,961.02/115,210.80
  6. Step 6: Final answer
    x = 88,626.71

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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.