Home / 112,975.34-155,900.70-61,986.92

Finding the Fourth Proportional to 112,975.34, 155,900.70 and 61,986.92

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Solution

The fourth proportional to 112,975.34, 155,900.70 and 61,986.92 is: 85,539.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,975.34 : 155,900.70 = 61,986.92 : x
  2. Step 2: Convert to fraction form
    112,975.34/155,900.70 = 61,986.92/x
  3. Step 3: Cross multiply
    112,975.34x = 155,900.70 × 61,986.92
  4. Step 4: Simplify right side
    112,975.34x = 9,663,803,439.34
  5. Step 5: Solve for x
    x = 9,663,803,439.34/112,975.34
  6. Step 6: Final answer
    x = 85,539.06

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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.