Home / 112,605.90-155,397.96-61,623.06

Finding the Fourth Proportional to 112,605.90, 155,397.96 and 61,623.06

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Solution

The fourth proportional to 112,605.90, 155,397.96 and 61,623.06 is: 85,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,605.90 : 155,397.96 = 61,623.06 : x
  2. Step 2: Convert to fraction form
    112,605.90/155,397.96 = 61,623.06/x
  3. Step 3: Cross multiply
    112,605.90x = 155,397.96 × 61,623.06
  4. Step 4: Simplify right side
    112,605.90x = 9,576,097,812.96
  5. Step 5: Solve for x
    x = 9,576,097,812.96/112,605.90
  6. Step 6: Final answer
    x = 85,040.82

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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.