Home / 123,163.16-169,966.39-72,206.06

Finding the Fourth Proportional to 123,163.16, 169,966.39 and 72,206.06

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Solution

The fourth proportional to 123,163.16, 169,966.39 and 72,206.06 is: 99,645.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,163.16 : 169,966.39 = 72,206.06 : x
  2. Step 2: Convert to fraction form
    123,163.16/169,966.39 = 72,206.06/x
  3. Step 3: Cross multiply
    123,163.16x = 169,966.39 × 72,206.06
  4. Step 4: Simplify right side
    123,163.16x = 12,272,602,835.85
  5. Step 5: Solve for x
    x = 12,272,602,835.85/123,163.16
  6. Step 6: Final answer
    x = 99,645.08

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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.