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Finding the Fourth Proportional to 111,203.16, 153,422.28 and 63,422.16

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Solution

The fourth proportional to 111,203.16, 153,422.28 and 63,422.16 is: 87,500.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,203.16 : 153,422.28 = 63,422.16 : x
  2. Step 2: Convert to fraction form
    111,203.16/153,422.28 = 63,422.16/x
  3. Step 3: Cross multiply
    111,203.16x = 153,422.28 × 63,422.16
  4. Step 4: Simplify right side
    111,203.16x = 9,730,372,389.72
  5. Step 5: Solve for x
    x = 9,730,372,389.72/111,203.16
  6. Step 6: Final answer
    x = 87,500.86

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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.