Home / 84,844.40-127,266.60-81,345.20

Finding the Fourth Proportional to 84,844.40, 127,266.60 and 81,345.20

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Solution

The fourth proportional to 84,844.40, 127,266.60 and 81,345.20 is: 122,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,844.40 : 127,266.60 = 81,345.20 : x
  2. Step 2: Convert to fraction form
    84,844.40/127,266.60 = 81,345.20/x
  3. Step 3: Cross multiply
    84,844.40x = 127,266.60 × 81,345.20
  4. Step 4: Simplify right side
    84,844.40x = 10,352,527,030.32
  5. Step 5: Solve for x
    x = 10,352,527,030.32/84,844.40
  6. Step 6: Final answer
    x = 122,017.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.