Home / 135,436.83-186,933.93-90,116.72

Finding the Fourth Proportional to 135,436.83, 186,933.93 and 90,116.72

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Solution

The fourth proportional to 135,436.83, 186,933.93 and 90,116.72 is: 124,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,436.83 : 186,933.93 = 90,116.72 : x
  2. Step 2: Convert to fraction form
    135,436.83/186,933.93 = 90,116.72/x
  3. Step 3: Cross multiply
    135,436.83x = 186,933.93 × 90,116.72
  4. Step 4: Simplify right side
    135,436.83x = 16,845,872,056.70
  5. Step 5: Solve for x
    x = 16,845,872,056.70/135,436.83
  6. Step 6: Final answer
    x = 124,381.77

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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.