Home / 138,521,258.52-191,112,920.74-79,782,747.72

Finding the Fourth Proportional to 138,521,258.52, 191,112,920.74 and 79,782,747.72

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Solution

The fourth proportional to 138,521,258.52, 191,112,920.74 and 79,782,747.72 is: 110,073,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,521,258.52 : 191,112,920.74 = 79,782,747.72 : x
  2. Step 2: Convert to fraction form
    138,521,258.52/191,112,920.74 = 79,782,747.72/x
  3. Step 3: Cross multiply
    138,521,258.52x = 191,112,920.74 × 79,782,747.72
  4. Step 4: Simplify right side
    138,521,258.52x = 15,247,513,941,431,776
  5. Step 5: Solve for x
    x = 15,247,513,941,431,776/138,521,258.52
  6. Step 6: Final answer
    x = 110,073,458.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.