Home / 136,127.34-187,828.20-79,527.78

Finding the Fourth Proportional to 136,127.34, 187,828.20 and 79,527.78

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Solution

The fourth proportional to 136,127.34, 187,828.20 and 79,527.78 is: 109,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,127.34 : 187,828.20 = 79,527.78 : x
  2. Step 2: Convert to fraction form
    136,127.34/187,828.20 = 79,527.78/x
  3. Step 3: Cross multiply
    136,127.34x = 187,828.20 × 79,527.78
  4. Step 4: Simplify right side
    136,127.34x = 14,937,559,767.40
  5. Step 5: Solve for x
    x = 14,937,559,767.40/136,127.34
  6. Step 6: Final answer
    x = 109,732.25

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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.