Home / 134,421.12-185,487.84-77,850.72

Finding the Fourth Proportional to 134,421.12, 185,487.84 and 77,850.72

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Solution

The fourth proportional to 134,421.12, 185,487.84 and 77,850.72 is: 107,426.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,421.12 : 185,487.84 = 77,850.72 : x
  2. Step 2: Convert to fraction form
    134,421.12/185,487.84 = 77,850.72/x
  3. Step 3: Cross multiply
    134,421.12x = 185,487.84 × 77,850.72
  4. Step 4: Simplify right side
    134,421.12x = 14,440,361,895.24
  5. Step 5: Solve for x
    x = 14,440,361,895.24/134,421.12
  6. Step 6: Final answer
    x = 107,426.29

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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.