Home / 142,079.36-196,071.12-78,417.14

Finding the Fourth Proportional to 142,079.36, 196,071.12 and 78,417.14

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Solution

The fourth proportional to 142,079.36, 196,071.12 and 78,417.14 is: 108,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,079.36 : 196,071.12 = 78,417.14 : x
  2. Step 2: Convert to fraction form
    142,079.36/196,071.12 = 78,417.14/x
  3. Step 3: Cross multiply
    142,079.36x = 196,071.12 × 78,417.14
  4. Step 4: Simplify right side
    142,079.36x = 15,375,336,467.00
  5. Step 5: Solve for x
    x = 15,375,336,467.00/142,079.36
  6. Step 6: Final answer
    x = 108,216.54

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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.