Home / 143,127.04-197,500.88-79,457.92

Finding the Fourth Proportional to 143,127.04, 197,500.88 and 79,457.92

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Solution

The fourth proportional to 143,127.04, 197,500.88 and 79,457.92 is: 109,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,127.04 : 197,500.88 = 79,457.92 : x
  2. Step 2: Convert to fraction form
    143,127.04/197,500.88 = 79,457.92/x
  3. Step 3: Cross multiply
    143,127.04x = 197,500.88 × 79,457.92
  4. Step 4: Simplify right side
    143,127.04x = 15,693,009,122.97
  5. Step 5: Solve for x
    x = 15,693,009,122.97/143,127.04
  6. Step 6: Final answer
    x = 109,643.92

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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.