Home / 143,017.94-197,364.80-79,356.20

Finding the Fourth Proportional to 143,017.94, 197,364.80 and 79,356.20

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Solution

The fourth proportional to 143,017.94, 197,364.80 and 79,356.20 is: 109,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,017.94 : 197,364.80 = 79,356.20 : x
  2. Step 2: Convert to fraction form
    143,017.94/197,364.80 = 79,356.20/x
  3. Step 3: Cross multiply
    143,017.94x = 197,364.80 × 79,356.20
  4. Step 4: Simplify right side
    143,017.94x = 15,662,120,541.76
  5. Step 5: Solve for x
    x = 15,662,120,541.76/143,017.94
  6. Step 6: Final answer
    x = 109,511.58

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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.