Home / 117,366,939.20-175,882,447.20-86,420,014.40

Finding the Fourth Proportional to 117,366,939.20, 175,882,447.20 and 86,420,014.40

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Solution

The fourth proportional to 117,366,939.20, 175,882,447.20 and 86,420,014.40 is: 129,506,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,366,939.20 : 175,882,447.20 = 86,420,014.40 : x
  2. Step 2: Convert to fraction form
    117,366,939.20/175,882,447.20 = 86,420,014.40/x
  3. Step 3: Cross multiply
    117,366,939.20x = 175,882,447.20 × 86,420,014.40
  4. Step 4: Simplify right side
    117,366,939.20x = 15,199,763,619,731,240
  5. Step 5: Solve for x
    x = 15,199,763,619,731,240/117,366,939.20
  6. Step 6: Final answer
    x = 129,506,347.56

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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.