Home / 257,070.22-385,601.19-70,081.72

Finding the Fourth Proportional to 257,070.22, 385,601.19 and 70,081.72

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Solution

The fourth proportional to 257,070.22, 385,601.19 and 70,081.72 is: 105,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,070.22 : 385,601.19 = 70,081.72 : x
  2. Step 2: Convert to fraction form
    257,070.22/385,601.19 = 70,081.72/x
  3. Step 3: Cross multiply
    257,070.22x = 385,601.19 × 70,081.72
  4. Step 4: Simplify right side
    257,070.22x = 27,023,594,629.25
  5. Step 5: Solve for x
    x = 27,023,594,629.25/257,070.22
  6. Step 6: Final answer
    x = 105,121.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.