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Finding the Fourth Proportional to 194,820.80, 291,712.80 and 124,318.40

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Solution

The fourth proportional to 194,820.80, 291,712.80 and 124,318.40 is: 186,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,820.80 : 291,712.80 = 124,318.40 : x
  2. Step 2: Convert to fraction form
    194,820.80/291,712.80 = 124,318.40/x
  3. Step 3: Cross multiply
    194,820.80x = 291,712.80 × 124,318.40
  4. Step 4: Simplify right side
    194,820.80x = 36,265,268,555.52
  5. Step 5: Solve for x
    x = 36,265,268,555.52/194,820.80
  6. Step 6: Final answer
    x = 186,146.80

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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.