Home / 122,971.66-169,779.24-100,364.57

Finding the Fourth Proportional to 122,971.66, 169,779.24 and 100,364.57

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Solution

The fourth proportional to 122,971.66, 169,779.24 and 100,364.57 is: 138,567.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,971.66 : 169,779.24 = 100,364.57 : x
  2. Step 2: Convert to fraction form
    122,971.66/169,779.24 = 100,364.57/x
  3. Step 3: Cross multiply
    122,971.66x = 169,779.24 × 100,364.57
  4. Step 4: Simplify right side
    122,971.66x = 17,039,820,465.61
  5. Step 5: Solve for x
    x = 17,039,820,465.61/122,971.66
  6. Step 6: Final answer
    x = 138,567.06

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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.