Home / 140,421.52-193,784.70-76,765.24

Finding the Fourth Proportional to 140,421.52, 193,784.70 and 76,765.24

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Solution

The fourth proportional to 140,421.52, 193,784.70 and 76,765.24 is: 105,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,421.52 : 193,784.70 = 76,765.24 : x
  2. Step 2: Convert to fraction form
    140,421.52/193,784.70 = 76,765.24/x
  3. Step 3: Cross multiply
    140,421.52x = 193,784.70 × 76,765.24
  4. Step 4: Simplify right side
    140,421.52x = 14,875,929,003.83
  5. Step 5: Solve for x
    x = 14,875,929,003.83/140,421.52
  6. Step 6: Final answer
    x = 105,937.67

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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.