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Finding the Fourth Proportional to 158,221.59, 218,341.47 and 90,237.03

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Solution

The fourth proportional to 158,221.59, 218,341.47 and 90,237.03 is: 124,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,221.59 : 218,341.47 = 90,237.03 : x
  2. Step 2: Convert to fraction form
    158,221.59/218,341.47 = 90,237.03/x
  3. Step 3: Cross multiply
    158,221.59x = 218,341.47 × 90,237.03
  4. Step 4: Simplify right side
    158,221.59x = 19,702,485,778.63
  5. Step 5: Solve for x
    x = 19,702,485,778.63/158,221.59
  6. Step 6: Final answer
    x = 124,524.64

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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.