Home / 142,181.10-196,208.64-77,650.02

Finding the Fourth Proportional to 142,181.10, 196,208.64 and 77,650.02

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Solution

The fourth proportional to 142,181.10, 196,208.64 and 77,650.02 is: 107,156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.10 : 196,208.64 = 77,650.02 : x
  2. Step 2: Convert to fraction form
    142,181.10/196,208.64 = 77,650.02/x
  3. Step 3: Cross multiply
    142,181.10x = 196,208.64 × 77,650.02
  4. Step 4: Simplify right side
    142,181.10x = 15,235,604,820.17
  5. Step 5: Solve for x
    x = 15,235,604,820.17/142,181.10
  6. Step 6: Final answer
    x = 107,156.33

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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.