Home / 135,143.31-186,481.57-74,705.77

Finding the Fourth Proportional to 135,143.31, 186,481.57 and 74,705.77

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Solution

The fourth proportional to 135,143.31, 186,481.57 and 74,705.77 is: 103,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,143.31 : 186,481.57 = 74,705.77 : x
  2. Step 2: Convert to fraction form
    135,143.31/186,481.57 = 74,705.77/x
  3. Step 3: Cross multiply
    135,143.31x = 186,481.57 × 74,705.77
  4. Step 4: Simplify right side
    135,143.31x = 13,931,249,277.66
  5. Step 5: Solve for x
    x = 13,931,249,277.66/135,143.31
  6. Step 6: Final answer
    x = 103,085.01

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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.