Home / 115,202.18-158,959.76-64,203.78

Finding the Fourth Proportional to 115,202.18, 158,959.76 and 64,203.78

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Solution

The fourth proportional to 115,202.18, 158,959.76 and 64,203.78 is: 88,590.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,202.18 : 158,959.76 = 64,203.78 : x
  2. Step 2: Convert to fraction form
    115,202.18/158,959.76 = 64,203.78/x
  3. Step 3: Cross multiply
    115,202.18x = 158,959.76 × 64,203.78
  4. Step 4: Simplify right side
    115,202.18x = 10,205,817,459.89
  5. Step 5: Solve for x
    x = 10,205,817,459.89/115,202.18
  6. Step 6: Final answer
    x = 88,590.49

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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.