Home / 159,488,378-220,094,050.20-86,149,520.72

Finding the Fourth Proportional to 159,488,378, 220,094,050.20 and 86,149,520.72

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Solution

The fourth proportional to 159,488,378, 220,094,050.20 and 86,149,520.72 is: 118,886,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488,378 : 220,094,050.20 = 86,149,520.72 : x
  2. Step 2: Convert to fraction form
    159,488,378/220,094,050.20 = 86,149,520.72/x
  3. Step 3: Cross multiply
    159,488,378x = 220,094,050.20 × 86,149,520.72
  4. Step 4: Simplify right side
    159,488,378x = 18,960,996,938,053,620
  5. Step 5: Solve for x
    x = 18,960,996,938,053,620/159,488,378
  6. Step 6: Final answer
    x = 118,886,386.43

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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.