Home / 112,911.48-155,819.98-61,920.98

Finding the Fourth Proportional to 112,911.48, 155,819.98 and 61,920.98

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Solution

The fourth proportional to 112,911.48, 155,819.98 and 61,920.98 is: 85,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,911.48 : 155,819.98 = 61,920.98 : x
  2. Step 2: Convert to fraction form
    112,911.48/155,819.98 = 61,920.98/x
  3. Step 3: Cross multiply
    112,911.48x = 155,819.98 × 61,920.98
  4. Step 4: Simplify right side
    112,911.48x = 9,648,525,865.18
  5. Step 5: Solve for x
    x = 9,648,525,865.18/112,911.48
  6. Step 6: Final answer
    x = 85,452.12

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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.