Home / 112,508.78-155,266.94-61,518.47

Finding the Fourth Proportional to 112,508.78, 155,266.94 and 61,518.47

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Solution

The fourth proportional to 112,508.78, 155,266.94 and 61,518.47 is: 84,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,508.78 : 155,266.94 = 61,518.47 : x
  2. Step 2: Convert to fraction form
    112,508.78/155,266.94 = 61,518.47/x
  3. Step 3: Cross multiply
    112,508.78x = 155,266.94 × 61,518.47
  4. Step 4: Simplify right side
    112,508.78x = 9,551,783,506.45
  5. Step 5: Solve for x
    x = 9,551,783,506.45/112,508.78
  6. Step 6: Final answer
    x = 84,898.12

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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.