Home / 112,774.09-155,620.95-61,786.75

Finding the Fourth Proportional to 112,774.09, 155,620.95 and 61,786.75

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Solution

The fourth proportional to 112,774.09, 155,620.95 and 61,786.75 is: 85,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,774.09 : 155,620.95 = 61,786.75 : x
  2. Step 2: Convert to fraction form
    112,774.09/155,620.95 = 61,786.75/x
  3. Step 3: Cross multiply
    112,774.09x = 155,620.95 × 61,786.75
  4. Step 4: Simplify right side
    112,774.09x = 9,615,312,343.36
  5. Step 5: Solve for x
    x = 9,615,312,343.36/112,774.09
  6. Step 6: Final answer
    x = 85,261.72

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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.