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Finding the Fourth Proportional to 88,359.04, 122,009.05 and 81,948.30

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Solution

The fourth proportional to 88,359.04, 122,009.05 and 81,948.30 is: 113,156.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,359.04 : 122,009.05 = 81,948.30 : x
  2. Step 2: Convert to fraction form
    88,359.04/122,009.05 = 81,948.30/x
  3. Step 3: Cross multiply
    88,359.04x = 122,009.05 × 81,948.30
  4. Step 4: Simplify right side
    88,359.04x = 9,998,434,232.12
  5. Step 5: Solve for x
    x = 9,998,434,232.12/88,359.04
  6. Step 6: Final answer
    x = 113,156.89

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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.