Home / 135,902.79-187,530.93-77,760.18

Finding the Fourth Proportional to 135,902.79, 187,530.93 and 77,760.18

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Solution

The fourth proportional to 135,902.79, 187,530.93 and 77,760.18 is: 107,300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,902.79 : 187,530.93 = 77,760.18 : x
  2. Step 2: Convert to fraction form
    135,902.79/187,530.93 = 77,760.18/x
  3. Step 3: Cross multiply
    135,902.79x = 187,530.93 × 77,760.18
  4. Step 4: Simplify right side
    135,902.79x = 14,582,438,872.37
  5. Step 5: Solve for x
    x = 14,582,438,872.37/135,902.79
  6. Step 6: Final answer
    x = 107,300.51

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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.