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Finding the Fourth Proportional to 142,149.17, 213,222.71 and 57,889.53

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Solution

The fourth proportional to 142,149.17, 213,222.71 and 57,889.53 is: 86,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,149.17 : 213,222.71 = 57,889.53 : x
  2. Step 2: Convert to fraction form
    142,149.17/213,222.71 = 57,889.53/x
  3. Step 3: Cross multiply
    142,149.17x = 213,222.71 × 57,889.53
  4. Step 4: Simplify right side
    142,149.17x = 12,343,362,611.95
  5. Step 5: Solve for x
    x = 12,343,362,611.95/142,149.17
  6. Step 6: Final answer
    x = 86,833.87

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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.