Home / 84,810.24-127,263.15-78,118.02

Finding the Fourth Proportional to 84,810.24, 127,263.15 and 78,118.02

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Solution

The fourth proportional to 84,810.24, 127,263.15 and 78,118.02 is: 117,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,810.24 : 127,263.15 = 78,118.02 : x
  2. Step 2: Convert to fraction form
    84,810.24/127,263.15 = 78,118.02/x
  3. Step 3: Cross multiply
    84,810.24x = 127,263.15 × 78,118.02
  4. Step 4: Simplify right side
    84,810.24x = 9,941,545,296.96
  5. Step 5: Solve for x
    x = 9,941,545,296.96/84,810.24
  6. Step 6: Final answer
    x = 117,221.05

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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.