Home / 124,879.04-172,475-83,972

Finding the Fourth Proportional to 124,879.04, 172,475 and 83,972

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Solution

The fourth proportional to 124,879.04, 172,475 and 83,972 is: 115,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,879.04 : 172,475 = 83,972 : x
  2. Step 2: Convert to fraction form
    124,879.04/172,475 = 83,972/x
  3. Step 3: Cross multiply
    124,879.04x = 172,475 × 83,972
  4. Step 4: Simplify right side
    124,879.04x = 14,483,070,700
  5. Step 5: Solve for x
    x = 14,483,070,700/124,879.04
  6. Step 6: Final answer
    x = 115,976.79

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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.