Home / 159,488,320-220,093,970.16-86,149,462.72

Finding the Fourth Proportional to 159,488,320, 220,093,970.16 and 86,149,462.72

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Solution

The fourth proportional to 159,488,320, 220,093,970.16 and 86,149,462.72 is: 118,886,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488,320 : 220,093,970.16 = 86,149,462.72 : x
  2. Step 2: Convert to fraction form
    159,488,320/220,093,970.16 = 86,149,462.72/x
  3. Step 3: Cross multiply
    159,488,320x = 220,093,970.16 × 86,149,462.72
  4. Step 4: Simplify right side
    159,488,320x = 18,960,977,277,195,712
  5. Step 5: Solve for x
    x = 18,960,977,277,195,712/159,488,320
  6. Step 6: Final answer
    x = 118,886,306.39

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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.