Home / 156,521.12-215,997.61-84,900.11

Finding the Fourth Proportional to 156,521.12, 215,997.61 and 84,900.11

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Solution

The fourth proportional to 156,521.12, 215,997.61 and 84,900.11 is: 117,161.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,521.12 : 215,997.61 = 84,900.11 : x
  2. Step 2: Convert to fraction form
    156,521.12/215,997.61 = 84,900.11/x
  3. Step 3: Cross multiply
    156,521.12x = 215,997.61 × 84,900.11
  4. Step 4: Simplify right side
    156,521.12x = 18,338,220,848.74
  5. Step 5: Solve for x
    x = 18,338,220,848.74/156,521.12
  6. Step 6: Final answer
    x = 117,161.32

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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.