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Finding the Fourth Proportional to 143,457.11, 197,970.24 and 79,794.91

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Solution

The fourth proportional to 143,457.11, 197,970.24 and 79,794.91 is: 110,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,457.11 : 197,970.24 = 79,794.91 : x
  2. Step 2: Convert to fraction form
    143,457.11/197,970.24 = 79,794.91/x
  3. Step 3: Cross multiply
    143,457.11x = 197,970.24 × 79,794.91
  4. Step 4: Simplify right side
    143,457.11x = 15,797,017,483.48
  5. Step 5: Solve for x
    x = 15,797,017,483.48/143,457.11
  6. Step 6: Final answer
    x = 110,116.66

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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.