Home / 142,266.32-196,310.80-78,600.32

Finding the Fourth Proportional to 142,266.32, 196,310.80 and 78,600.32

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Solution

The fourth proportional to 142,266.32, 196,310.80 and 78,600.32 is: 108,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,266.32 : 196,310.80 = 78,600.32 : x
  2. Step 2: Convert to fraction form
    142,266.32/196,310.80 = 78,600.32/x
  3. Step 3: Cross multiply
    142,266.32x = 196,310.80 × 78,600.32
  4. Step 4: Simplify right side
    142,266.32x = 15,430,091,699.46
  5. Step 5: Solve for x
    x = 15,430,091,699.46/142,266.32
  6. Step 6: Final answer
    x = 108,459.20

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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.