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Finding the Fourth Proportional to 83,971.20, 125,956.80 and 73,036.20

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Solution

The fourth proportional to 83,971.20, 125,956.80 and 73,036.20 is: 109,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,971.20 : 125,956.80 = 73,036.20 : x
  2. Step 2: Convert to fraction form
    83,971.20/125,956.80 = 73,036.20/x
  3. Step 3: Cross multiply
    83,971.20x = 125,956.80 × 73,036.20
  4. Step 4: Simplify right side
    83,971.20x = 9,199,406,036.16
  5. Step 5: Solve for x
    x = 9,199,406,036.16/83,971.20
  6. Step 6: Final answer
    x = 109,554.30

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1.5x scale

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.