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Finding the Fourth Proportional to 109,036.80, 163,360.80 and 92,318.40

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Solution

The fourth proportional to 109,036.80, 163,360.80 and 92,318.40 is: 138,313.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,036.80 : 163,360.80 = 92,318.40 : x
  2. Step 2: Convert to fraction form
    109,036.80/163,360.80 = 92,318.40/x
  3. Step 3: Cross multiply
    109,036.80x = 163,360.80 × 92,318.40
  4. Step 4: Simplify right side
    109,036.80x = 15,081,207,678.72
  5. Step 5: Solve for x
    x = 15,081,207,678.72/109,036.80
  6. Step 6: Final answer
    x = 138,313.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.