Home / 112,721,189.60-168,838,845.94-76,128,359.84

Finding the Fourth Proportional to 112,721,189.60, 168,838,845.94 and 76,128,359.84

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Solution

The fourth proportional to 112,721,189.60, 168,838,845.94 and 76,128,359.84 is: 114,028,466.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,721,189.60 : 168,838,845.94 = 76,128,359.84 : x
  2. Step 2: Convert to fraction form
    112,721,189.60/168,838,845.94 = 76,128,359.84/x
  3. Step 3: Cross multiply
    112,721,189.60x = 168,838,845.94 × 76,128,359.84
  4. Step 4: Simplify right side
    112,721,189.60x = 12,853,424,418,690,644
  5. Step 5: Solve for x
    x = 12,853,424,418,690,644/112,721,189.60
  6. Step 6: Final answer
    x = 114,028,466.74

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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.