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Finding the Fourth Proportional to 158,713.16, 219,023.56 and 87,094.38

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Solution

The fourth proportional to 158,713.16, 219,023.56 and 87,094.38 is: 120,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,713.16 : 219,023.56 = 87,094.38 : x
  2. Step 2: Convert to fraction form
    158,713.16/219,023.56 = 87,094.38/x
  3. Step 3: Cross multiply
    158,713.16x = 219,023.56 × 87,094.38
  4. Step 4: Simplify right side
    158,713.16x = 19,075,721,163.59
  5. Step 5: Solve for x
    x = 19,075,721,163.59/158,713.16
  6. Step 6: Final answer
    x = 120,189.91

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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.