Home / 135,654.64-187,180.59-90,400.18

Finding the Fourth Proportional to 135,654.64, 187,180.59 and 90,400.18

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Solution

The fourth proportional to 135,654.64, 187,180.59 and 90,400.18 is: 124,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,654.64 : 187,180.59 = 90,400.18 : x
  2. Step 2: Convert to fraction form
    135,654.64/187,180.59 = 90,400.18/x
  3. Step 3: Cross multiply
    135,654.64x = 187,180.59 × 90,400.18
  4. Step 4: Simplify right side
    135,654.64x = 16,921,159,028.51
  5. Step 5: Solve for x
    x = 16,921,159,028.51/135,654.64
  6. Step 6: Final answer
    x = 124,737.05

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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.