Home / 112,976.21-155,901.95-61,987.67

Finding the Fourth Proportional to 112,976.21, 155,901.95 and 61,987.67

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Solution

The fourth proportional to 112,976.21, 155,901.95 and 61,987.67 is: 85,540.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,976.21 : 155,901.95 = 61,987.67 : x
  2. Step 2: Convert to fraction form
    112,976.21/155,901.95 = 61,987.67/x
  3. Step 3: Cross multiply
    112,976.21x = 155,901.95 × 61,987.67
  4. Step 4: Simplify right side
    112,976.21x = 9,663,998,006.60
  5. Step 5: Solve for x
    x = 9,663,998,006.60/112,976.21
  6. Step 6: Final answer
    x = 85,540.12

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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.