Home / 112,757.86-169,071.09-42,642.64

Finding the Fourth Proportional to 112,757.86, 169,071.09 and 42,642.64

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Solution

The fourth proportional to 112,757.86, 169,071.09 and 42,642.64 is: 63,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,757.86 : 169,071.09 = 42,642.64 : x
  2. Step 2: Convert to fraction form
    112,757.86/169,071.09 = 42,642.64/x
  3. Step 3: Cross multiply
    112,757.86x = 169,071.09 × 42,642.64
  4. Step 4: Simplify right side
    112,757.86x = 7,209,637,625.28
  5. Step 5: Solve for x
    x = 7,209,637,625.28/112,757.86
  6. Step 6: Final answer
    x = 63,939.11

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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.