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Finding the Fourth Proportional to 158,610.70, 218,881.74 and 90,648.46

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Solution

The fourth proportional to 158,610.70, 218,881.74 and 90,648.46 is: 125,094.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,610.70 : 218,881.74 = 90,648.46 : x
  2. Step 2: Convert to fraction form
    158,610.70/218,881.74 = 90,648.46/x
  3. Step 3: Cross multiply
    158,610.70x = 218,881.74 × 90,648.46
  4. Step 4: Simplify right side
    158,610.70x = 19,841,292,653.12
  5. Step 5: Solve for x
    x = 19,841,292,653.12/158,610.70
  6. Step 6: Final answer
    x = 125,094.29

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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.