Home / 90,944.23-135,705.08-81,487.91

Finding the Fourth Proportional to 90,944.23, 135,705.08 and 81,487.91

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Solution

The fourth proportional to 90,944.23, 135,705.08 and 81,487.91 is: 121,594.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,944.23 : 135,705.08 = 81,487.91 : x
  2. Step 2: Convert to fraction form
    90,944.23/135,705.08 = 81,487.91/x
  3. Step 3: Cross multiply
    90,944.23x = 135,705.08 × 81,487.91
  4. Step 4: Simplify right side
    90,944.23x = 11,058,323,888.57
  5. Step 5: Solve for x
    x = 11,058,323,888.57/90,944.23
  6. Step 6: Final answer
    x = 121,594.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.