Home / 112,129.64-154,738.74-61,828.76

Finding the Fourth Proportional to 112,129.64, 154,738.74 and 61,828.76

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Solution

The fourth proportional to 112,129.64, 154,738.74 and 61,828.76 is: 85,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.64 : 154,738.74 = 61,828.76 : x
  2. Step 2: Convert to fraction form
    112,129.64/154,738.74 = 61,828.76/x
  3. Step 3: Cross multiply
    112,129.64x = 154,738.74 × 61,828.76
  4. Step 4: Simplify right side
    112,129.64x = 9,567,304,418.16
  5. Step 5: Solve for x
    x = 9,567,304,418.16/112,129.64
  6. Step 6: Final answer
    x = 85,323.60

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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.