Home / 121,344,078.40-182,016,117.60-78,345,908.80

Finding the Fourth Proportional to 121,344,078.40, 182,016,117.60 and 78,345,908.80

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Solution

The fourth proportional to 121,344,078.40, 182,016,117.60 and 78,345,908.80 is: 117,518,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,344,078.40 : 182,016,117.60 = 78,345,908.80 : x
  2. Step 2: Convert to fraction form
    121,344,078.40/182,016,117.60 = 78,345,908.80/x
  3. Step 3: Cross multiply
    121,344,078.40x = 182,016,117.60 × 78,345,908.80
  4. Step 4: Simplify right side
    121,344,078.40x = 14,260,218,149,619,674
  5. Step 5: Solve for x
    x = 14,260,218,149,619,674/121,344,078.40
  6. Step 6: Final answer
    x = 117,518,863.20

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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.