Home / 142,272.55-196,333.71-77,740.36

Finding the Fourth Proportional to 142,272.55, 196,333.71 and 77,740.36

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Solution

The fourth proportional to 142,272.55, 196,333.71 and 77,740.36 is: 107,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,272.55 : 196,333.71 = 77,740.36 : x
  2. Step 2: Convert to fraction form
    142,272.55/196,333.71 = 77,740.36/x
  3. Step 3: Cross multiply
    142,272.55x = 196,333.71 × 77,740.36
  4. Step 4: Simplify right side
    142,272.55x = 15,263,052,513.18
  5. Step 5: Solve for x
    x = 15,263,052,513.18/142,272.55
  6. Step 6: Final answer
    x = 107,280.37

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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.