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Finding the Fourth Proportional to 159,188.82, 219,681.10 and 87,574.30

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Solution

The fourth proportional to 159,188.82, 219,681.10 and 87,574.30 is: 120,852.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,188.82 : 219,681.10 = 87,574.30 : x
  2. Step 2: Convert to fraction form
    159,188.82/219,681.10 = 87,574.30/x
  3. Step 3: Cross multiply
    159,188.82x = 219,681.10 × 87,574.30
  4. Step 4: Simplify right side
    159,188.82x = 19,238,418,555.73
  5. Step 5: Solve for x
    x = 19,238,418,555.73/159,188.82
  6. Step 6: Final answer
    x = 120,852.82

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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.