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Finding the Fourth Proportional to 169,990,279.80, 254,985,419.70 and 54,986,447.40

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Solution

The fourth proportional to 169,990,279.80, 254,985,419.70 and 54,986,447.40 is: 82,479,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,990,279.80 : 254,985,419.70 = 54,986,447.40 : x
  2. Step 2: Convert to fraction form
    169,990,279.80/254,985,419.70 = 54,986,447.40/x
  3. Step 3: Cross multiply
    169,990,279.80x = 254,985,419.70 × 54,986,447.40
  4. Step 4: Simplify right side
    169,990,279.80x = 14,020,742,368,100,972
  5. Step 5: Solve for x
    x = 14,020,742,368,100,972/169,990,279.80
  6. Step 6: Final answer
    x = 82,479,671.10

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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.