Home / 112,985.12-169,127.73-66,329.12

Finding the Fourth Proportional to 112,985.12, 169,127.73 and 66,329.12

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Solution

The fourth proportional to 112,985.12, 169,127.73 and 66,329.12 is: 99,288.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,985.12 : 169,127.73 = 66,329.12 : x
  2. Step 2: Convert to fraction form
    112,985.12/169,127.73 = 66,329.12/x
  3. Step 3: Cross multiply
    112,985.12x = 169,127.73 × 66,329.12
  4. Step 4: Simplify right side
    112,985.12x = 11,218,092,652.86
  5. Step 5: Solve for x
    x = 11,218,092,652.86/112,985.12
  6. Step 6: Final answer
    x = 99,288.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.