Home / 109,677.21-151,364.77-66,646.77

Finding the Fourth Proportional to 109,677.21, 151,364.77 and 66,646.77

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Solution

The fourth proportional to 109,677.21, 151,364.77 and 66,646.77 is: 91,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,677.21 : 151,364.77 = 66,646.77 : x
  2. Step 2: Convert to fraction form
    109,677.21/151,364.77 = 66,646.77/x
  3. Step 3: Cross multiply
    109,677.21x = 151,364.77 × 66,646.77
  4. Step 4: Simplify right side
    109,677.21x = 10,087,972,679.06
  5. Step 5: Solve for x
    x = 10,087,972,679.06/109,677.21
  6. Step 6: Final answer
    x = 91,978.75

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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.