Home / 142,437.39-196,555.65-77,893.89

Finding the Fourth Proportional to 142,437.39, 196,555.65 and 77,893.89

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Solution

The fourth proportional to 142,437.39, 196,555.65 and 77,893.89 is: 107,489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,437.39 : 196,555.65 = 77,893.89 : x
  2. Step 2: Convert to fraction form
    142,437.39/196,555.65 = 77,893.89/x
  3. Step 3: Cross multiply
    142,437.39x = 196,555.65 × 77,893.89
  4. Step 4: Simplify right side
    142,437.39x = 15,310,484,179.98
  5. Step 5: Solve for x
    x = 15,310,484,179.98/142,437.39
  6. Step 6: Final answer
    x = 107,489.22

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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.