Home / 117,717.12-162,342-87,577.92

Finding the Fourth Proportional to 117,717.12, 162,342 and 87,577.92

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Solution

The fourth proportional to 117,717.12, 162,342 and 87,577.92 is: 120,777.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,717.12 : 162,342 = 87,577.92 : x
  2. Step 2: Convert to fraction form
    117,717.12/162,342 = 87,577.92/x
  3. Step 3: Cross multiply
    117,717.12x = 162,342 × 87,577.92
  4. Step 4: Simplify right side
    117,717.12x = 14,217,574,688.64
  5. Step 5: Solve for x
    x = 14,217,574,688.64/117,717.12
  6. Step 6: Final answer
    x = 120,777.46

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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.