Home / 112,858.63-155,743.77-61,874.17

Finding the Fourth Proportional to 112,858.63, 155,743.77 and 61,874.17

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Solution

The fourth proportional to 112,858.63, 155,743.77 and 61,874.17 is: 85,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,858.63 : 155,743.77 = 61,874.17 : x
  2. Step 2: Convert to fraction form
    112,858.63/155,743.77 = 61,874.17/x
  3. Step 3: Cross multiply
    112,858.63x = 155,743.77 × 61,874.17
  4. Step 4: Simplify right side
    112,858.63x = 9,636,516,501.42
  5. Step 5: Solve for x
    x = 9,636,516,501.42/112,858.63
  6. Step 6: Final answer
    x = 85,385.73

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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.