Home / 78,218,324.12-117,518,775.78-73,867,574.36

Finding the Fourth Proportional to 78,218,324.12, 117,518,775.78 and 73,867,574.36

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Solution

The fourth proportional to 78,218,324.12, 117,518,775.78 and 73,867,574.36 is: 110,982,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,218,324.12 : 117,518,775.78 = 73,867,574.36 : x
  2. Step 2: Convert to fraction form
    78,218,324.12/117,518,775.78 = 73,867,574.36/x
  3. Step 3: Cross multiply
    78,218,324.12x = 117,518,775.78 × 73,867,574.36
  4. Step 4: Simplify right side
    78,218,324.12x = 8,680,826,909,196,117
  5. Step 5: Solve for x
    x = 8,680,826,909,196,117/78,218,324.12
  6. Step 6: Final answer
    x = 110,982,011.01

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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.