Home / 117,779.25-162,509.69-66,780.47

Finding the Fourth Proportional to 117,779.25, 162,509.69 and 66,780.47

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Solution

The fourth proportional to 117,779.25, 162,509.69 and 66,780.47 is: 92,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,779.25 : 162,509.69 = 66,780.47 : x
  2. Step 2: Convert to fraction form
    117,779.25/162,509.69 = 66,780.47/x
  3. Step 3: Cross multiply
    117,779.25x = 162,509.69 × 66,780.47
  4. Step 4: Simplify right side
    117,779.25x = 10,852,473,136.86
  5. Step 5: Solve for x
    x = 10,852,473,136.86/117,779.25
  6. Step 6: Final answer
    x = 92,142.49

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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.