Home / 143,437.01-197,946.86-78,907.95

Finding the Fourth Proportional to 143,437.01, 197,946.86 and 78,907.95

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Solution

The fourth proportional to 143,437.01, 197,946.86 and 78,907.95 is: 108,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,437.01 : 197,946.86 = 78,907.95 : x
  2. Step 2: Convert to fraction form
    143,437.01/197,946.86 = 78,907.95/x
  3. Step 3: Cross multiply
    143,437.01x = 197,946.86 × 78,907.95
  4. Step 4: Simplify right side
    143,437.01x = 15,619,580,537.00
  5. Step 5: Solve for x
    x = 15,619,580,537.00/143,437.01
  6. Step 6: Final answer
    x = 108,895.05

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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.