Home / 120,129,647.76-165,791,269.97-73,090,060.72

Finding the Fourth Proportional to 120,129,647.76, 165,791,269.97 and 73,090,060.72

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Solution

The fourth proportional to 120,129,647.76, 165,791,269.97 and 73,090,060.72 is: 100,871,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,129,647.76 : 165,791,269.97 = 73,090,060.72 : x
  2. Step 2: Convert to fraction form
    120,129,647.76/165,791,269.97 = 73,090,060.72/x
  3. Step 3: Cross multiply
    120,129,647.76x = 165,791,269.97 × 73,090,060.72
  4. Step 4: Simplify right side
    120,129,647.76x = 12,117,693,988,953,212
  5. Step 5: Solve for x
    x = 12,117,693,988,953,212/120,129,647.76
  6. Step 6: Final answer
    x = 100,871,801.55

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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.