Home / 112,705.10-155,532.75-62,405.90

Finding the Fourth Proportional to 112,705.10, 155,532.75 and 62,405.90

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Solution

The fourth proportional to 112,705.10, 155,532.75 and 62,405.90 is: 86,119.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,705.10 : 155,532.75 = 62,405.90 : x
  2. Step 2: Convert to fraction form
    112,705.10/155,532.75 = 62,405.90/x
  3. Step 3: Cross multiply
    112,705.10x = 155,532.75 × 62,405.90
  4. Step 4: Simplify right side
    112,705.10x = 9,706,161,243.23
  5. Step 5: Solve for x
    x = 9,706,161,243.23/112,705.10
  6. Step 6: Final answer
    x = 86,119.98

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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.