Home / 139,870.20-193,023.09-76,207.98

Finding the Fourth Proportional to 139,870.20, 193,023.09 and 76,207.98

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Solution

The fourth proportional to 139,870.20, 193,023.09 and 76,207.98 is: 105,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,870.20 : 193,023.09 = 76,207.98 : x
  2. Step 2: Convert to fraction form
    139,870.20/193,023.09 = 76,207.98/x
  3. Step 3: Cross multiply
    139,870.20x = 193,023.09 × 76,207.98
  4. Step 4: Simplify right side
    139,870.20x = 14,709,899,782.26
  5. Step 5: Solve for x
    x = 14,709,899,782.26/139,870.20
  6. Step 6: Final answer
    x = 105,168.22

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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.