Home / 138,152.18-190,650.30-81,567.20

Finding the Fourth Proportional to 138,152.18, 190,650.30 and 81,567.20

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Solution

The fourth proportional to 138,152.18, 190,650.30 and 81,567.20 is: 112,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,152.18 : 190,650.30 = 81,567.20 : x
  2. Step 2: Convert to fraction form
    138,152.18/190,650.30 = 81,567.20/x
  3. Step 3: Cross multiply
    138,152.18x = 190,650.30 × 81,567.20
  4. Step 4: Simplify right side
    138,152.18x = 15,550,811,150.16
  5. Step 5: Solve for x
    x = 15,550,811,150.16/138,152.18
  6. Step 6: Final answer
    x = 112,562.91

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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.