Home / 112,126.87-154,733.10-61,140

Finding the Fourth Proportional to 112,126.87, 154,733.10 and 61,140

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Solution

The fourth proportional to 112,126.87, 154,733.10 and 61,140 is: 84,372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,126.87 : 154,733.10 = 61,140 : x
  2. Step 2: Convert to fraction form
    112,126.87/154,733.10 = 61,140/x
  3. Step 3: Cross multiply
    112,126.87x = 154,733.10 × 61,140
  4. Step 4: Simplify right side
    112,126.87x = 9,460,381,734
  5. Step 5: Solve for x
    x = 9,460,381,734/112,126.87
  6. Step 6: Final answer
    x = 84,372.12

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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.