Home / 117,779.64-162,540.21-67,488.36

Finding the Fourth Proportional to 117,779.64, 162,540.21 and 67,488.36

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Solution

The fourth proportional to 117,779.64, 162,540.21 and 67,488.36 is: 93,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,779.64 : 162,540.21 = 67,488.36 : x
  2. Step 2: Convert to fraction form
    117,779.64/162,540.21 = 67,488.36/x
  3. Step 3: Cross multiply
    117,779.64x = 162,540.21 × 67,488.36
  4. Step 4: Simplify right side
    117,779.64x = 10,969,572,206.96
  5. Step 5: Solve for x
    x = 10,969,572,206.96/117,779.64
  6. Step 6: Final answer
    x = 93,136.40

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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.