Home / 143,436.50-197,946.16-78,907.46

Finding the Fourth Proportional to 143,436.50, 197,946.16 and 78,907.46

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Solution

The fourth proportional to 143,436.50, 197,946.16 and 78,907.46 is: 108,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,436.50 : 197,946.16 = 78,907.46 : x
  2. Step 2: Convert to fraction form
    143,436.50/197,946.16 = 78,907.46/x
  3. Step 3: Cross multiply
    143,436.50x = 197,946.16 × 78,907.46
  4. Step 4: Simplify right side
    143,436.50x = 15,619,428,702.35
  5. Step 5: Solve for x
    x = 15,619,428,702.35/143,436.50
  6. Step 6: Final answer
    x = 108,894.38

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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.