Home / 149,038.11-205,674.37-81,056.77

Finding the Fourth Proportional to 149,038.11, 205,674.37 and 81,056.77

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Solution

The fourth proportional to 149,038.11, 205,674.37 and 81,056.77 is: 111,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,038.11 : 205,674.37 = 81,056.77 : x
  2. Step 2: Convert to fraction form
    149,038.11/205,674.37 = 81,056.77/x
  3. Step 3: Cross multiply
    149,038.11x = 205,674.37 × 81,056.77
  4. Step 4: Simplify right side
    149,038.11x = 16,671,299,387.16
  5. Step 5: Solve for x
    x = 16,671,299,387.16/149,038.11
  6. Step 6: Final answer
    x = 111,859.30

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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.