Home / 143,339.19-197,810.28-78,811.23

Finding the Fourth Proportional to 143,339.19, 197,810.28 and 78,811.23

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Solution

The fourth proportional to 143,339.19, 197,810.28 and 78,811.23 is: 108,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339.19 : 197,810.28 = 78,811.23 : x
  2. Step 2: Convert to fraction form
    143,339.19/197,810.28 = 78,811.23/x
  3. Step 3: Cross multiply
    143,339.19x = 197,810.28 × 78,811.23
  4. Step 4: Simplify right side
    143,339.19x = 15,589,670,484.39
  5. Step 5: Solve for x
    x = 15,589,670,484.39/143,339.19
  6. Step 6: Final answer
    x = 108,760.70

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1.5x scale

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.