Home / 131,421.60-181,380.60-74,838.24

Finding the Fourth Proportional to 131,421.60, 181,380.60 and 74,838.24

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Solution

The fourth proportional to 131,421.60, 181,380.60 and 74,838.24 is: 103,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.60 : 181,380.60 = 74,838.24 : x
  2. Step 2: Convert to fraction form
    131,421.60/181,380.60 = 74,838.24/x
  3. Step 3: Cross multiply
    131,421.60x = 181,380.60 × 74,838.24
  4. Step 4: Simplify right side
    131,421.60x = 13,574,204,874.14
  5. Step 5: Solve for x
    x = 13,574,204,874.14/131,421.60
  6. Step 6: Final answer
    x = 103,287.47

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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.