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Finding the Fourth Proportional to 161,937.81, 223,474.56 and 90,322.47

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Solution

The fourth proportional to 161,937.81, 223,474.56 and 90,322.47 is: 124,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,937.81 : 223,474.56 = 90,322.47 : x
  2. Step 2: Convert to fraction form
    161,937.81/223,474.56 = 90,322.47/x
  3. Step 3: Cross multiply
    161,937.81x = 223,474.56 × 90,322.47
  4. Step 4: Simplify right side
    161,937.81x = 20,184,774,241.36
  5. Step 5: Solve for x
    x = 20,184,774,241.36/161,937.81
  6. Step 6: Final answer
    x = 124,645.22

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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.