Home / 106,239.28-159,280.80-64,134.40

Finding the Fourth Proportional to 106,239.28, 159,280.80 and 64,134.40

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Solution

The fourth proportional to 106,239.28, 159,280.80 and 64,134.40 is: 96,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,239.28 : 159,280.80 = 64,134.40 : x
  2. Step 2: Convert to fraction form
    106,239.28/159,280.80 = 64,134.40/x
  3. Step 3: Cross multiply
    106,239.28x = 159,280.80 × 64,134.40
  4. Step 4: Simplify right side
    106,239.28x = 10,215,378,539.52
  5. Step 5: Solve for x
    x = 10,215,378,539.52/106,239.28
  6. Step 6: Final answer
    x = 96,154.44

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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.