Home / 142,283.58-196,342.81-77,739.94

Finding the Fourth Proportional to 142,283.58, 196,342.81 and 77,739.94

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Solution

The fourth proportional to 142,283.58, 196,342.81 and 77,739.94 is: 107,276.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,283.58 : 196,342.81 = 77,739.94 : x
  2. Step 2: Convert to fraction form
    142,283.58/196,342.81 = 77,739.94/x
  3. Step 3: Cross multiply
    142,283.58x = 196,342.81 × 77,739.94
  4. Step 4: Simplify right side
    142,283.58x = 15,263,678,268.83
  5. Step 5: Solve for x
    x = 15,263,678,268.83/142,283.58
  6. Step 6: Final answer
    x = 107,276.46

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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.