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Finding the Fourth Proportional to 125,055.70, 172,602.39 and 84,782.41

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Solution

The fourth proportional to 125,055.70, 172,602.39 and 84,782.41 is: 117,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,055.70 : 172,602.39 = 84,782.41 : x
  2. Step 2: Convert to fraction form
    125,055.70/172,602.39 = 84,782.41/x
  3. Step 3: Cross multiply
    125,055.70x = 172,602.39 × 84,782.41
  4. Step 4: Simplify right side
    125,055.70x = 14,633,646,595.96
  5. Step 5: Solve for x
    x = 14,633,646,595.96/125,055.70
  6. Step 6: Final answer
    x = 117,017.03

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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.