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Finding the Fourth Proportional to 158,901.60, 219,291.10 and 90,939.90

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Solution

The fourth proportional to 158,901.60, 219,291.10 and 90,939.90 is: 125,501.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,901.60 : 219,291.10 = 90,939.90 : x
  2. Step 2: Convert to fraction form
    158,901.60/219,291.10 = 90,939.90/x
  3. Step 3: Cross multiply
    158,901.60x = 219,291.10 × 90,939.90
  4. Step 4: Simplify right side
    158,901.60x = 19,942,310,704.89
  5. Step 5: Solve for x
    x = 19,942,310,704.89/158,901.60
  6. Step 6: Final answer
    x = 125,501.01

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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.