Home / 121,129,701.81-167,159,667.47-68,918,736.39

Finding the Fourth Proportional to 121,129,701.81, 167,159,667.47 and 68,918,736.39

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Solution

The fourth proportional to 121,129,701.81, 167,159,667.47 and 68,918,736.39 is: 95,108,242.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,129,701.81 : 167,159,667.47 = 68,918,736.39 : x
  2. Step 2: Convert to fraction form
    121,129,701.81/167,159,667.47 = 68,918,736.39/x
  3. Step 3: Cross multiply
    121,129,701.81x = 167,159,667.47 × 68,918,736.39
  4. Step 4: Simplify right side
    121,129,701.81x = 11,520,433,057,060,394
  5. Step 5: Solve for x
    x = 11,520,433,057,060,394/121,129,701.81
  6. Step 6: Final answer
    x = 95,108,242.53

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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.