Home / 149,038.61-205,674.77-81,057.14

Finding the Fourth Proportional to 149,038.61, 205,674.77 and 81,057.14

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Solution

The fourth proportional to 149,038.61, 205,674.77 and 81,057.14 is: 111,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,038.61 : 205,674.77 = 81,057.14 : x
  2. Step 2: Convert to fraction form
    149,038.61/205,674.77 = 81,057.14/x
  3. Step 3: Cross multiply
    149,038.61x = 205,674.77 × 81,057.14
  4. Step 4: Simplify right side
    149,038.61x = 16,671,407,192.70
  5. Step 5: Solve for x
    x = 16,671,407,192.70/149,038.61
  6. Step 6: Final answer
    x = 111,859.66

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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.