Home / 125,071.88-172,564.98-80,385.80

Finding the Fourth Proportional to 125,071.88, 172,564.98 and 80,385.80

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Solution

The fourth proportional to 125,071.88, 172,564.98 and 80,385.80 is: 110,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,071.88 : 172,564.98 = 80,385.80 : x
  2. Step 2: Convert to fraction form
    125,071.88/172,564.98 = 80,385.80/x
  3. Step 3: Cross multiply
    125,071.88x = 172,564.98 × 80,385.80
  4. Step 4: Simplify right side
    125,071.88x = 13,871,773,969.28
  5. Step 5: Solve for x
    x = 13,871,773,969.28/125,071.88
  6. Step 6: Final answer
    x = 110,910.41

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1.5x scale

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.