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Finding the Fourth Proportional to 159,643.10, 239,263.05 and 80,779.10

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Solution

The fourth proportional to 159,643.10, 239,263.05 and 80,779.10 is: 121,066.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,643.10 : 239,263.05 = 80,779.10 : x
  2. Step 2: Convert to fraction form
    159,643.10/239,263.05 = 80,779.10/x
  3. Step 3: Cross multiply
    159,643.10x = 239,263.05 × 80,779.10
  4. Step 4: Simplify right side
    159,643.10x = 19,327,453,842.26
  5. Step 5: Solve for x
    x = 19,327,453,842.26/159,643.10
  6. Step 6: Final answer
    x = 121,066.64

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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.