Home / 100,070.16-138,094.92-55,358.16

Finding the Fourth Proportional to 100,070.16, 138,094.92 and 55,358.16

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Solution

The fourth proportional to 100,070.16, 138,094.92 and 55,358.16 is: 76,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,070.16 : 138,094.92 = 55,358.16 : x
  2. Step 2: Convert to fraction form
    100,070.16/138,094.92 = 55,358.16/x
  3. Step 3: Cross multiply
    100,070.16x = 138,094.92 × 55,358.16
  4. Step 4: Simplify right side
    100,070.16x = 7,644,680,676.55
  5. Step 5: Solve for x
    x = 7,644,680,676.55/100,070.16
  6. Step 6: Final answer
    x = 76,393.21

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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.