Home / 118,225.09-163,178.04-77,945.95

Finding the Fourth Proportional to 118,225.09, 163,178.04 and 77,945.95

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Solution

The fourth proportional to 118,225.09, 163,178.04 and 77,945.95 is: 107,583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,225.09 : 163,178.04 = 77,945.95 : x
  2. Step 2: Convert to fraction form
    118,225.09/163,178.04 = 77,945.95/x
  3. Step 3: Cross multiply
    118,225.09x = 163,178.04 × 77,945.95
  4. Step 4: Simplify right side
    118,225.09x = 12,719,067,346.94
  5. Step 5: Solve for x
    x = 12,719,067,346.94/118,225.09
  6. Step 6: Final answer
    x = 107,583.49

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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.