Home / 121,664.43-182,507.46-42,779.34

Finding the Fourth Proportional to 121,664.43, 182,507.46 and 42,779.34

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Solution

The fourth proportional to 121,664.43, 182,507.46 and 42,779.34 is: 64,172.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,664.43 : 182,507.46 = 42,779.34 : x
  2. Step 2: Convert to fraction form
    121,664.43/182,507.46 = 42,779.34/x
  3. Step 3: Cross multiply
    121,664.43x = 182,507.46 × 42,779.34
  4. Step 4: Simplify right side
    121,664.43x = 7,807,548,683.88
  5. Step 5: Solve for x
    x = 7,807,548,683.88/121,664.43
  6. Step 6: Final answer
    x = 64,172.81

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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.