Home / 138,622.20-191,328.28-87,602.46

Finding the Fourth Proportional to 138,622.20, 191,328.28 and 87,602.46

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Solution

The fourth proportional to 138,622.20, 191,328.28 and 87,602.46 is: 120,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,622.20 : 191,328.28 = 87,602.46 : x
  2. Step 2: Convert to fraction form
    138,622.20/191,328.28 = 87,602.46/x
  3. Step 3: Cross multiply
    138,622.20x = 191,328.28 × 87,602.46
  4. Step 4: Simplify right side
    138,622.20x = 16,760,827,995.57
  5. Step 5: Solve for x
    x = 16,760,827,995.57/138,622.20
  6. Step 6: Final answer
    x = 120,910.13

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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.