Home / 142,125.39-196,129.89-77,592.42

Finding the Fourth Proportional to 142,125.39, 196,129.89 and 77,592.42

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Solution

The fourth proportional to 142,125.39, 196,129.89 and 77,592.42 is: 107,075.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.39 : 196,129.89 = 77,592.42 : x
  2. Step 2: Convert to fraction form
    142,125.39/196,129.89 = 77,592.42/x
  3. Step 3: Cross multiply
    142,125.39x = 196,129.89 × 77,592.42
  4. Step 4: Simplify right side
    142,125.39x = 15,218,192,799.43
  5. Step 5: Solve for x
    x = 15,218,192,799.43/142,125.39
  6. Step 6: Final answer
    x = 107,075.82

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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.