Home / 140,080.86-193,307.76-76,418.64

Finding the Fourth Proportional to 140,080.86, 193,307.76 and 76,418.64

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Solution

The fourth proportional to 140,080.86, 193,307.76 and 76,418.64 is: 105,455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,080.86 : 193,307.76 = 76,418.64 : x
  2. Step 2: Convert to fraction form
    140,080.86/193,307.76 = 76,418.64/x
  3. Step 3: Cross multiply
    140,080.86x = 193,307.76 × 76,418.64
  4. Step 4: Simplify right side
    140,080.86x = 14,772,316,120.65
  5. Step 5: Solve for x
    x = 14,772,316,120.65/140,080.86
  6. Step 6: Final answer
    x = 105,455.64

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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.