Home / 120,158.51-165,814.26-66,442.55

Finding the Fourth Proportional to 120,158.51, 165,814.26 and 66,442.55

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Solution

The fourth proportional to 120,158.51, 165,814.26 and 66,442.55 is: 91,688.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,158.51 : 165,814.26 = 66,442.55 : x
  2. Step 2: Convert to fraction form
    120,158.51/165,814.26 = 66,442.55/x
  3. Step 3: Cross multiply
    120,158.51x = 165,814.26 × 66,442.55
  4. Step 4: Simplify right side
    120,158.51x = 11,017,122,260.76
  5. Step 5: Solve for x
    x = 11,017,122,260.76/120,158.51
  6. Step 6: Final answer
    x = 91,688.24

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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.