Home / 115,211.16-158,983.28-64,221.60

Finding the Fourth Proportional to 115,211.16, 158,983.28 and 64,221.60

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Solution

The fourth proportional to 115,211.16, 158,983.28 and 64,221.60 is: 88,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.16 : 158,983.28 = 64,221.60 : x
  2. Step 2: Convert to fraction form
    115,211.16/158,983.28 = 64,221.60/x
  3. Step 3: Cross multiply
    115,211.16x = 158,983.28 × 64,221.60
  4. Step 4: Simplify right side
    115,211.16x = 10,210,160,193.53
  5. Step 5: Solve for x
    x = 10,210,160,193.53/115,211.16
  6. Step 6: Final answer
    x = 88,621.28

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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.