Home / 142,188.89-213,119.28-53,385.75

Finding the Fourth Proportional to 142,188.89, 213,119.28 and 53,385.75

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Solution

The fourth proportional to 142,188.89, 213,119.28 and 53,385.75 is: 80,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,188.89 : 213,119.28 = 53,385.75 : x
  2. Step 2: Convert to fraction form
    142,188.89/213,119.28 = 53,385.75/x
  3. Step 3: Cross multiply
    142,188.89x = 213,119.28 × 53,385.75
  4. Step 4: Simplify right side
    142,188.89x = 11,377,532,602.26
  5. Step 5: Solve for x
    x = 11,377,532,602.26/142,188.89
  6. Step 6: Final answer
    x = 80,017.03

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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.