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Finding the Fourth Proportional to 125,924.76, 188,886.94 and 86,361.93

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Solution

The fourth proportional to 125,924.76, 188,886.94 and 86,361.93 is: 129,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,924.76 : 188,886.94 = 86,361.93 : x
  2. Step 2: Convert to fraction form
    125,924.76/188,886.94 = 86,361.93/x
  3. Step 3: Cross multiply
    125,924.76x = 188,886.94 × 86,361.93
  4. Step 4: Simplify right side
    125,924.76x = 16,312,640,474.29
  5. Step 5: Solve for x
    x = 16,312,640,474.29/125,924.76
  6. Step 6: Final answer
    x = 129,542.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.