Home / 149,129.32-205,804.14-85,479.40

Finding the Fourth Proportional to 149,129.32, 205,804.14 and 85,479.40

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Solution

The fourth proportional to 149,129.32, 205,804.14 and 85,479.40 is: 117,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,129.32 : 205,804.14 = 85,479.40 : x
  2. Step 2: Convert to fraction form
    149,129.32/205,804.14 = 85,479.40/x
  3. Step 3: Cross multiply
    149,129.32x = 205,804.14 × 85,479.40
  4. Step 4: Simplify right side
    149,129.32x = 17,592,014,404.72
  5. Step 5: Solve for x
    x = 17,592,014,404.72/149,129.32
  6. Step 6: Final answer
    x = 117,964.83

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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.