Home / 134,542-185,685.78-86,933.80

Finding the Fourth Proportional to 134,542, 185,685.78 and 86,933.80

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Solution

The fourth proportional to 134,542, 185,685.78 and 86,933.80 is: 119,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,542 : 185,685.78 = 86,933.80 : x
  2. Step 2: Convert to fraction form
    134,542/185,685.78 = 86,933.80/x
  3. Step 3: Cross multiply
    134,542x = 185,685.78 × 86,933.80
  4. Step 4: Simplify right side
    134,542x = 16,142,370,461.36
  5. Step 5: Solve for x
    x = 16,142,370,461.36/134,542
  6. Step 6: Final answer
    x = 119,980.16

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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.