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Finding the Fourth Proportional to 140,578.88, 210,868.52 and 57,472.88

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Solution

The fourth proportional to 140,578.88, 210,868.52 and 57,472.88 is: 86,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,578.88 : 210,868.52 = 57,472.88 : x
  2. Step 2: Convert to fraction form
    140,578.88/210,868.52 = 57,472.88/x
  3. Step 3: Cross multiply
    140,578.88x = 210,868.52 × 57,472.88
  4. Step 4: Simplify right side
    140,578.88x = 12,119,219,804.03
  5. Step 5: Solve for x
    x = 12,119,219,804.03/140,578.88
  6. Step 6: Final answer
    x = 86,209.40

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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.