Home / 109,160,652.78-163,243,638.88-81,513,984.80

Finding the Fourth Proportional to 109,160,652.78, 163,243,638.88 and 81,513,984.80

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Solution

The fourth proportional to 109,160,652.78, 163,243,638.88 and 81,513,984.80 is: 121,899,596.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,160,652.78 : 163,243,638.88 = 81,513,984.80 : x
  2. Step 2: Convert to fraction form
    109,160,652.78/163,243,638.88 = 81,513,984.80/x
  3. Step 3: Cross multiply
    109,160,652.78x = 163,243,638.88 × 81,513,984.80
  4. Step 4: Simplify right side
    109,160,652.78x = 13,306,639,498,361,008
  5. Step 5: Solve for x
    x = 13,306,639,498,361,008/109,160,652.78
  6. Step 6: Final answer
    x = 121,899,596.23

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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.