Home / 142,142.34-196,150.50-77,606.40

Finding the Fourth Proportional to 142,142.34, 196,150.50 and 77,606.40

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Solution

The fourth proportional to 142,142.34, 196,150.50 and 77,606.40 is: 107,093.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,142.34 : 196,150.50 = 77,606.40 : x
  2. Step 2: Convert to fraction form
    142,142.34/196,150.50 = 77,606.40/x
  3. Step 3: Cross multiply
    142,142.34x = 196,150.50 × 77,606.40
  4. Step 4: Simplify right side
    142,142.34x = 15,222,534,163.20
  5. Step 5: Solve for x
    x = 15,222,534,163.20/142,142.34
  6. Step 6: Final answer
    x = 107,093.59

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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.