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Finding the Fourth Proportional to 118,149.45, 163,055.93 and 67,178.17

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Solution

The fourth proportional to 118,149.45, 163,055.93 and 67,178.17 is: 92,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,149.45 : 163,055.93 = 67,178.17 : x
  2. Step 2: Convert to fraction form
    118,149.45/163,055.93 = 67,178.17/x
  3. Step 3: Cross multiply
    118,149.45x = 163,055.93 × 67,178.17
  4. Step 4: Simplify right side
    118,149.45x = 10,953,798,985.05
  5. Step 5: Solve for x
    x = 10,953,798,985.05/118,149.45
  6. Step 6: Final answer
    x = 92,711.38

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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.