Home / 118,531.17-163,523.75-77,684.13

Finding the Fourth Proportional to 118,531.17, 163,523.75 and 77,684.13

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Solution

The fourth proportional to 118,531.17, 163,523.75 and 77,684.13 is: 107,171.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,531.17 : 163,523.75 = 77,684.13 : x
  2. Step 2: Convert to fraction form
    118,531.17/163,523.75 = 77,684.13/x
  3. Step 3: Cross multiply
    118,531.17x = 163,523.75 × 77,684.13
  4. Step 4: Simplify right side
    118,531.17x = 12,703,199,864.67
  5. Step 5: Solve for x
    x = 12,703,199,864.67/118,531.17
  6. Step 6: Final answer
    x = 107,171.81

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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.