Home / 120,864.28-166,746.18-89,108.68

Finding the Fourth Proportional to 120,864.28, 166,746.18 and 89,108.68

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Solution

The fourth proportional to 120,864.28, 166,746.18 and 89,108.68 is: 122,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,864.28 : 166,746.18 = 89,108.68 : x
  2. Step 2: Convert to fraction form
    120,864.28/166,746.18 = 89,108.68/x
  3. Step 3: Cross multiply
    120,864.28x = 166,746.18 × 89,108.68
  4. Step 4: Simplify right side
    120,864.28x = 14,858,531,994.84
  5. Step 5: Solve for x
    x = 14,858,531,994.84/120,864.28
  6. Step 6: Final answer
    x = 122,935.68

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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.