Home / 140,031.78-193,210.64-79,597.68

Finding the Fourth Proportional to 140,031.78, 193,210.64 and 79,597.68

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Solution

The fourth proportional to 140,031.78, 193,210.64 and 79,597.68 is: 109,825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,031.78 : 193,210.64 = 79,597.68 : x
  2. Step 2: Convert to fraction form
    140,031.78/193,210.64 = 79,597.68/x
  3. Step 3: Cross multiply
    140,031.78x = 193,210.64 × 79,597.68
  4. Step 4: Simplify right side
    140,031.78x = 15,379,118,695.32
  5. Step 5: Solve for x
    x = 15,379,118,695.32/140,031.78
  6. Step 6: Final answer
    x = 109,825.92

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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.