Home / 115,931.40-173,666.70-66,625.80

Finding the Fourth Proportional to 115,931.40, 173,666.70 and 66,625.80

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Solution

The fourth proportional to 115,931.40, 173,666.70 and 66,625.80 is: 99,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,931.40 : 173,666.70 = 66,625.80 : x
  2. Step 2: Convert to fraction form
    115,931.40/173,666.70 = 66,625.80/x
  3. Step 3: Cross multiply
    115,931.40x = 173,666.70 × 66,625.80
  4. Step 4: Simplify right side
    115,931.40x = 11,570,682,820.86
  5. Step 5: Solve for x
    x = 11,570,682,820.86/115,931.40
  6. Step 6: Final answer
    x = 99,806.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.