Home / 123,007.40-169,671.48-77,605.28

Finding the Fourth Proportional to 123,007.40, 169,671.48 and 77,605.28

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Solution

The fourth proportional to 123,007.40, 169,671.48 and 77,605.28 is: 107,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,007.40 : 169,671.48 = 77,605.28 : x
  2. Step 2: Convert to fraction form
    123,007.40/169,671.48 = 77,605.28/x
  3. Step 3: Cross multiply
    123,007.40x = 169,671.48 × 77,605.28
  4. Step 4: Simplify right side
    123,007.40x = 13,167,402,713.41
  5. Step 5: Solve for x
    x = 13,167,402,713.41/123,007.40
  6. Step 6: Final answer
    x = 107,045.61

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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.