Home / 132,870.76-183,257.97-85,128.58

Finding the Fourth Proportional to 132,870.76, 183,257.97 and 85,128.58

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Solution

The fourth proportional to 132,870.76, 183,257.97 and 85,128.58 is: 117,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,870.76 : 183,257.97 = 85,128.58 : x
  2. Step 2: Convert to fraction form
    132,870.76/183,257.97 = 85,128.58/x
  3. Step 3: Cross multiply
    132,870.76x = 183,257.97 × 85,128.58
  4. Step 4: Simplify right side
    132,870.76x = 15,600,490,759.78
  5. Step 5: Solve for x
    x = 15,600,490,759.78/132,870.76
  6. Step 6: Final answer
    x = 117,411.01

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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.