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Finding the Fourth Proportional to 137,307.16, 189,386.16 and 126,013.12

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Solution

The fourth proportional to 137,307.16, 189,386.16 and 126,013.12 is: 173,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,307.16 : 189,386.16 = 126,013.12 : x
  2. Step 2: Convert to fraction form
    137,307.16/189,386.16 = 126,013.12/x
  3. Step 3: Cross multiply
    137,307.16x = 189,386.16 × 126,013.12
  4. Step 4: Simplify right side
    137,307.16x = 23,865,140,906.42
  5. Step 5: Solve for x
    x = 23,865,140,906.42/137,307.16
  6. Step 6: Final answer
    x = 173,808.42

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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.