Home / 142,131.04-196,139.52-78,467.44

Finding the Fourth Proportional to 142,131.04, 196,139.52 and 78,467.44

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Solution

The fourth proportional to 142,131.04, 196,139.52 and 78,467.44 is: 108,284.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,131.04 : 196,139.52 = 78,467.44 : x
  2. Step 2: Convert to fraction form
    142,131.04/196,139.52 = 78,467.44/x
  3. Step 3: Cross multiply
    142,131.04x = 196,139.52 × 78,467.44
  4. Step 4: Simplify right side
    142,131.04x = 15,390,566,017.23
  5. Step 5: Solve for x
    x = 15,390,566,017.23/142,131.04
  6. Step 6: Final answer
    x = 108,284.34

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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.