Home / 125,331.63-172,859.90-77,611.47

Finding the Fourth Proportional to 125,331.63, 172,859.90 and 77,611.47

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Solution

The fourth proportional to 125,331.63, 172,859.90 and 77,611.47 is: 107,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,331.63 : 172,859.90 = 77,611.47 : x
  2. Step 2: Convert to fraction form
    125,331.63/172,859.90 = 77,611.47/x
  3. Step 3: Cross multiply
    125,331.63x = 172,859.90 × 77,611.47
  4. Step 4: Simplify right side
    125,331.63x = 13,415,910,555.00
  5. Step 5: Solve for x
    x = 13,415,910,555.00/125,331.63
  6. Step 6: Final answer
    x = 107,043.29

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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.