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Finding the Fourth Proportional to 159,303.40, 238,965.90 and 54,130.30

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Solution

The fourth proportional to 159,303.40, 238,965.90 and 54,130.30 is: 81,199.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,303.40 : 238,965.90 = 54,130.30 : x
  2. Step 2: Convert to fraction form
    159,303.40/238,965.90 = 54,130.30/x
  3. Step 3: Cross multiply
    159,303.40x = 238,965.90 × 54,130.30
  4. Step 4: Simplify right side
    159,303.40x = 12,935,295,856.77
  5. Step 5: Solve for x
    x = 12,935,295,856.77/159,303.40
  6. Step 6: Final answer
    x = 81,199.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.