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Finding the Fourth Proportional to 121,700.49, 167,935.35 and 70,712.69

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Solution

The fourth proportional to 121,700.49, 167,935.35 and 70,712.69 is: 97,576.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,700.49 : 167,935.35 = 70,712.69 : x
  2. Step 2: Convert to fraction form
    121,700.49/167,935.35 = 70,712.69/x
  3. Step 3: Cross multiply
    121,700.49x = 167,935.35 × 70,712.69
  4. Step 4: Simplify right side
    121,700.49x = 11,875,159,504.91
  5. Step 5: Solve for x
    x = 11,875,159,504.91/121,700.49
  6. Step 6: Final answer
    x = 97,576.92

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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.