Home / 142,059.36-196,041.48-78,396.60

Finding the Fourth Proportional to 142,059.36, 196,041.48 and 78,396.60

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Solution

The fourth proportional to 142,059.36, 196,041.48 and 78,396.60 is: 108,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,059.36 : 196,041.48 = 78,396.60 : x
  2. Step 2: Convert to fraction form
    142,059.36/196,041.48 = 78,396.60/x
  3. Step 3: Cross multiply
    142,059.36x = 196,041.48 × 78,396.60
  4. Step 4: Simplify right side
    142,059.36x = 15,368,985,490.97
  5. Step 5: Solve for x
    x = 15,368,985,490.97/142,059.36
  6. Step 6: Final answer
    x = 108,187.07

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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.