Home / 125,116.25-172,663.78-70,664.05

Finding the Fourth Proportional to 125,116.25, 172,663.78 and 70,664.05

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Solution

The fourth proportional to 125,116.25, 172,663.78 and 70,664.05 is: 97,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,116.25 : 172,663.78 = 70,664.05 : x
  2. Step 2: Convert to fraction form
    125,116.25/172,663.78 = 70,664.05/x
  3. Step 3: Cross multiply
    125,116.25x = 172,663.78 × 70,664.05
  4. Step 4: Simplify right side
    125,116.25x = 12,201,121,983.11
  5. Step 5: Solve for x
    x = 12,201,121,983.11/125,116.25
  6. Step 6: Final answer
    x = 97,518.28

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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.