Home / 142,166.51-196,190.17-77,636.34

Finding the Fourth Proportional to 142,166.51, 196,190.17 and 77,636.34

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Solution

The fourth proportional to 142,166.51, 196,190.17 and 77,636.34 is: 107,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,166.51 : 196,190.17 = 77,636.34 : x
  2. Step 2: Convert to fraction form
    142,166.51/196,190.17 = 77,636.34/x
  3. Step 3: Cross multiply
    142,166.51x = 196,190.17 × 77,636.34
  4. Step 4: Simplify right side
    142,166.51x = 15,231,486,548.69
  5. Step 5: Solve for x
    x = 15,231,486,548.69/142,166.51
  6. Step 6: Final answer
    x = 107,138.36

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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.