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Finding the Fourth Proportional to 162,779.30, 244,136.55 and 78,539.30

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Solution

The fourth proportional to 162,779.30, 244,136.55 and 78,539.30 is: 117,793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,779.30 : 244,136.55 = 78,539.30 : x
  2. Step 2: Convert to fraction form
    162,779.30/244,136.55 = 78,539.30/x
  3. Step 3: Cross multiply
    162,779.30x = 244,136.55 × 78,539.30
  4. Step 4: Simplify right side
    162,779.30x = 19,174,313,741.42
  5. Step 5: Solve for x
    x = 19,174,313,741.42/162,779.30
  6. Step 6: Final answer
    x = 117,793.32

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1.5x scale

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.