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Finding the Fourth Proportional to 159,001.16, 219,425.64 and 87,383

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Solution

The fourth proportional to 159,001.16, 219,425.64 and 87,383 is: 120,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,001.16 : 219,425.64 = 87,383 : x
  2. Step 2: Convert to fraction form
    159,001.16/219,425.64 = 87,383/x
  3. Step 3: Cross multiply
    159,001.16x = 219,425.64 × 87,383
  4. Step 4: Simplify right side
    159,001.16x = 19,174,070,700.12
  5. Step 5: Solve for x
    x = 19,174,070,700.12/159,001.16
  6. Step 6: Final answer
    x = 120,590.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.