Home / 123,640.20-185,849.10-121,307.40

Finding the Fourth Proportional to 123,640.20, 185,849.10 and 121,307.40

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Solution

The fourth proportional to 123,640.20, 185,849.10 and 121,307.40 is: 182,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.20 : 185,849.10 = 121,307.40 : x
  2. Step 2: Convert to fraction form
    123,640.20/185,849.10 = 121,307.40/x
  3. Step 3: Cross multiply
    123,640.20x = 185,849.10 × 121,307.40
  4. Step 4: Simplify right side
    123,640.20x = 22,544,871,113.34
  5. Step 5: Solve for x
    x = 22,544,871,113.34/123,640.20
  6. Step 6: Final answer
    x = 182,342.56

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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.