Home / 142,410.12-196,522.08-78,745.74

Finding the Fourth Proportional to 142,410.12, 196,522.08 and 78,745.74

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Solution

The fourth proportional to 142,410.12, 196,522.08 and 78,745.74 is: 108,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,410.12 : 196,522.08 = 78,745.74 : x
  2. Step 2: Convert to fraction form
    142,410.12/196,522.08 = 78,745.74/x
  3. Step 3: Cross multiply
    142,410.12x = 196,522.08 × 78,745.74
  4. Step 4: Simplify right side
    142,410.12x = 15,475,276,615.94
  5. Step 5: Solve for x
    x = 15,475,276,615.94/142,410.12
  6. Step 6: Final answer
    x = 108,666.97

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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.