Home / 142,014.64-212,992.80-67,102.96

Finding the Fourth Proportional to 142,014.64, 212,992.80 and 67,102.96

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Solution

The fourth proportional to 142,014.64, 212,992.80 and 67,102.96 is: 100,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,014.64 : 212,992.80 = 67,102.96 : x
  2. Step 2: Convert to fraction form
    142,014.64/212,992.80 = 67,102.96/x
  3. Step 3: Cross multiply
    142,014.64x = 212,992.80 × 67,102.96
  4. Step 4: Simplify right side
    142,014.64x = 14,292,447,338.69
  5. Step 5: Solve for x
    x = 14,292,447,338.69/142,014.64
  6. Step 6: Final answer
    x = 100,640.66

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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.