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Finding the Fourth Proportional to 117,885.39, 162,740.12 and 80,356.47

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Solution

The fourth proportional to 117,885.39, 162,740.12 and 80,356.47 is: 110,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,885.39 : 162,740.12 = 80,356.47 : x
  2. Step 2: Convert to fraction form
    117,885.39/162,740.12 = 80,356.47/x
  3. Step 3: Cross multiply
    117,885.39x = 162,740.12 × 80,356.47
  4. Step 4: Simplify right side
    117,885.39x = 13,077,221,168.79
  5. Step 5: Solve for x
    x = 13,077,221,168.79/117,885.39
  6. Step 6: Final answer
    x = 110,931.65

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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.