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Finding the Fourth Proportional to 159,188.90, 219,681.72 and 87,567.08

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Solution

The fourth proportional to 159,188.90, 219,681.72 and 87,567.08 is: 120,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,188.90 : 219,681.72 = 87,567.08 : x
  2. Step 2: Convert to fraction form
    159,188.90/219,681.72 = 87,567.08/x
  3. Step 3: Cross multiply
    159,188.90x = 219,681.72 × 87,567.08
  4. Step 4: Simplify right side
    159,188.90x = 19,236,885,651.37
  5. Step 5: Solve for x
    x = 19,236,885,651.37/159,188.90
  6. Step 6: Final answer
    x = 120,843.14

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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.