Home / 143,071.80-197,456.58-79,430.10

Finding the Fourth Proportional to 143,071.80, 197,456.58 and 79,430.10

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Solution

The fourth proportional to 143,071.80, 197,456.58 and 79,430.10 is: 109,623.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,071.80 : 197,456.58 = 79,430.10 : x
  2. Step 2: Convert to fraction form
    143,071.80/197,456.58 = 79,430.10/x
  3. Step 3: Cross multiply
    143,071.80x = 197,456.58 × 79,430.10
  4. Step 4: Simplify right side
    143,071.80x = 15,683,995,895.06
  5. Step 5: Solve for x
    x = 15,683,995,895.06/143,071.80
  6. Step 6: Final answer
    x = 109,623.25

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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.