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Finding the Fourth Proportional to 142,247.34, 213,428.39 and 63,307.58

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Solution

The fourth proportional to 142,247.34, 213,428.39 and 63,307.58 is: 94,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,247.34 : 213,428.39 = 63,307.58 : x
  2. Step 2: Convert to fraction form
    142,247.34/213,428.39 = 63,307.58/x
  3. Step 3: Cross multiply
    142,247.34x = 213,428.39 × 63,307.58
  4. Step 4: Simplify right side
    142,247.34x = 13,511,633,490.52
  5. Step 5: Solve for x
    x = 13,511,633,490.52/142,247.34
  6. Step 6: Final answer
    x = 94,986.90

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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.