Home / 142,702.15-213,903.78-47,909.07

Finding the Fourth Proportional to 142,702.15, 213,903.78 and 47,909.07

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Solution

The fourth proportional to 142,702.15, 213,903.78 and 47,909.07 is: 71,813.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,702.15 : 213,903.78 = 47,909.07 : x
  2. Step 2: Convert to fraction form
    142,702.15/213,903.78 = 47,909.07/x
  3. Step 3: Cross multiply
    142,702.15x = 213,903.78 × 47,909.07
  4. Step 4: Simplify right side
    142,702.15x = 10,247,930,099.77
  5. Step 5: Solve for x
    x = 10,247,930,099.77/142,702.15
  6. Step 6: Final answer
    x = 71,813.42

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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.