Home / 134,987.31-186,281.78-74,562.12

Finding the Fourth Proportional to 134,987.31, 186,281.78 and 74,562.12

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Solution

The fourth proportional to 134,987.31, 186,281.78 and 74,562.12 is: 102,895.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,987.31 : 186,281.78 = 74,562.12 : x
  2. Step 2: Convert to fraction form
    134,987.31/186,281.78 = 74,562.12/x
  3. Step 3: Cross multiply
    134,987.31x = 186,281.78 × 74,562.12
  4. Step 4: Simplify right side
    134,987.31x = 13,889,564,061.36
  5. Step 5: Solve for x
    x = 13,889,564,061.36/134,987.31
  6. Step 6: Final answer
    x = 102,895.33

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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.