Home / 142,749.69-197,001.03-79,087.49

Finding the Fourth Proportional to 142,749.69, 197,001.03 and 79,087.49

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Solution

The fourth proportional to 142,749.69, 197,001.03 and 79,087.49 is: 109,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,749.69 : 197,001.03 = 79,087.49 : x
  2. Step 2: Convert to fraction form
    142,749.69/197,001.03 = 79,087.49/x
  3. Step 3: Cross multiply
    142,749.69x = 197,001.03 × 79,087.49
  4. Step 4: Simplify right side
    142,749.69x = 15,580,316,990.11
  5. Step 5: Solve for x
    x = 15,580,316,990.11/142,749.69
  6. Step 6: Final answer
    x = 109,144.31

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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.