Home / 143,048.24-197,406.88-79,386.16

Finding the Fourth Proportional to 143,048.24, 197,406.88 and 79,386.16

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Solution

The fourth proportional to 143,048.24, 197,406.88 and 79,386.16 is: 109,553.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,048.24 : 197,406.88 = 79,386.16 : x
  2. Step 2: Convert to fraction form
    143,048.24/197,406.88 = 79,386.16/x
  3. Step 3: Cross multiply
    143,048.24x = 197,406.88 × 79,386.16
  4. Step 4: Simplify right side
    143,048.24x = 15,671,374,160.78
  5. Step 5: Solve for x
    x = 15,671,374,160.78/143,048.24
  6. Step 6: Final answer
    x = 109,553.07

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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.