Home / 142,069.17-196,055.64-78,406.77

Finding the Fourth Proportional to 142,069.17, 196,055.64 and 78,406.77

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Solution

The fourth proportional to 142,069.17, 196,055.64 and 78,406.77 is: 108,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,069.17 : 196,055.64 = 78,406.77 : x
  2. Step 2: Convert to fraction form
    142,069.17/196,055.64 = 78,406.77/x
  3. Step 3: Cross multiply
    142,069.17x = 196,055.64 × 78,406.77
  4. Step 4: Simplify right side
    142,069.17x = 15,372,089,472.68
  5. Step 5: Solve for x
    x = 15,372,089,472.68/142,069.17
  6. Step 6: Final answer
    x = 108,201.44

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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.