Home / 143,360.28-197,842.23-78,834.40

Finding the Fourth Proportional to 143,360.28, 197,842.23 and 78,834.40

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Solution

The fourth proportional to 143,360.28, 197,842.23 and 78,834.40 is: 108,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,360.28 : 197,842.23 = 78,834.40 : x
  2. Step 2: Convert to fraction form
    143,360.28/197,842.23 = 78,834.40/x
  3. Step 3: Cross multiply
    143,360.28x = 197,842.23 × 78,834.40
  4. Step 4: Simplify right side
    143,360.28x = 15,596,773,002.11
  5. Step 5: Solve for x
    x = 15,596,773,002.11/143,360.28
  6. Step 6: Final answer
    x = 108,794.24

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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.