Home / 129,643.50-194,465.25-31,147.50

Finding the Fourth Proportional to 129,643.50, 194,465.25 and 31,147.50

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Solution

The fourth proportional to 129,643.50, 194,465.25 and 31,147.50 is: 46,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,643.50 : 194,465.25 = 31,147.50 : x
  2. Step 2: Convert to fraction form
    129,643.50/194,465.25 = 31,147.50/x
  3. Step 3: Cross multiply
    129,643.50x = 194,465.25 × 31,147.50
  4. Step 4: Simplify right side
    129,643.50x = 6,057,106,374.38
  5. Step 5: Solve for x
    x = 6,057,106,374.38/129,643.50
  6. Step 6: Final answer
    x = 46,721.25

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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.