Home / 120,427.16-166,165.53-72,683.12

Finding the Fourth Proportional to 120,427.16, 166,165.53 and 72,683.12

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Solution

The fourth proportional to 120,427.16, 166,165.53 and 72,683.12 is: 100,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,427.16 : 166,165.53 = 72,683.12 : x
  2. Step 2: Convert to fraction form
    120,427.16/166,165.53 = 72,683.12/x
  3. Step 3: Cross multiply
    120,427.16x = 166,165.53 × 72,683.12
  4. Step 4: Simplify right side
    120,427.16x = 12,077,429,299.71
  5. Step 5: Solve for x
    x = 12,077,429,299.71/120,427.16
  6. Step 6: Final answer
    x = 100,288.26

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1.5x scale

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.