Home / 112,975.71-155,901.21-61,987.29

Finding the Fourth Proportional to 112,975.71, 155,901.21 and 61,987.29

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Solution

The fourth proportional to 112,975.71, 155,901.21 and 61,987.29 is: 85,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,975.71 : 155,901.21 = 61,987.29 : x
  2. Step 2: Convert to fraction form
    112,975.71/155,901.21 = 61,987.29/x
  3. Step 3: Cross multiply
    112,975.71x = 155,901.21 × 61,987.29
  4. Step 4: Simplify right side
    112,975.71x = 9,663,893,515.62
  5. Step 5: Solve for x
    x = 9,663,893,515.62/112,975.71
  6. Step 6: Final answer
    x = 85,539.57

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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.