Home / 112,961.71-155,887.09-61,974.77

Finding the Fourth Proportional to 112,961.71, 155,887.09 and 61,974.77

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Solution

The fourth proportional to 112,961.71, 155,887.09 and 61,974.77 is: 85,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,961.71 : 155,887.09 = 61,974.77 : x
  2. Step 2: Convert to fraction form
    112,961.71/155,887.09 = 61,974.77/x
  3. Step 3: Cross multiply
    112,961.71x = 155,887.09 × 61,974.77
  4. Step 4: Simplify right side
    112,961.71x = 9,661,066,548.72
  5. Step 5: Solve for x
    x = 9,661,066,548.72/112,961.71
  6. Step 6: Final answer
    x = 85,525.14

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1.5x scale

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.