Home / 112,117.25-154,723.01-61,129.57

Finding the Fourth Proportional to 112,117.25, 154,723.01 and 61,129.57

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Solution

The fourth proportional to 112,117.25, 154,723.01 and 61,129.57 is: 84,359.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,117.25 : 154,723.01 = 61,129.57 : x
  2. Step 2: Convert to fraction form
    112,117.25/154,723.01 = 61,129.57/x
  3. Step 3: Cross multiply
    112,117.25x = 154,723.01 × 61,129.57
  4. Step 4: Simplify right side
    112,117.25x = 9,458,151,070.41
  5. Step 5: Solve for x
    x = 9,458,151,070.41/112,117.25
  6. Step 6: Final answer
    x = 84,359.46

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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.