Home / 118,326.56-163,166.30-77,988.66

Finding the Fourth Proportional to 118,326.56, 163,166.30 and 77,988.66

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Solution

The fourth proportional to 118,326.56, 163,166.30 and 77,988.66 is: 107,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,326.56 : 163,166.30 = 77,988.66 : x
  2. Step 2: Convert to fraction form
    118,326.56/163,166.30 = 77,988.66/x
  3. Step 3: Cross multiply
    118,326.56x = 163,166.30 × 77,988.66
  4. Step 4: Simplify right side
    118,326.56x = 12,725,120,384.80
  5. Step 5: Solve for x
    x = 12,725,120,384.80/118,326.56
  6. Step 6: Final answer
    x = 107,542.39

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1.5x scale

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.