Home / 143,003.71-197,345.13-79,341.36

Finding the Fourth Proportional to 143,003.71, 197,345.13 and 79,341.36

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Solution

The fourth proportional to 143,003.71, 197,345.13 and 79,341.36 is: 109,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.71 : 197,345.13 = 79,341.36 : x
  2. Step 2: Convert to fraction form
    143,003.71/197,345.13 = 79,341.36/x
  3. Step 3: Cross multiply
    143,003.71x = 197,345.13 × 79,341.36
  4. Step 4: Simplify right side
    143,003.71x = 15,657,631,003.58
  5. Step 5: Solve for x
    x = 15,657,631,003.58/143,003.71
  6. Step 6: Final answer
    x = 109,491.08

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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.