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Finding the Fourth Proportional to 142,299.63, 213,300.67 and 67,330.47

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Solution

The fourth proportional to 142,299.63, 213,300.67 and 67,330.47 is: 100,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,299.63 : 213,300.67 = 67,330.47 : x
  2. Step 2: Convert to fraction form
    142,299.63/213,300.67 = 67,330.47/x
  3. Step 3: Cross multiply
    142,299.63x = 213,300.67 × 67,330.47
  4. Step 4: Simplify right side
    142,299.63x = 14,361,634,232.09
  5. Step 5: Solve for x
    x = 14,361,634,232.09/142,299.63
  6. Step 6: Final answer
    x = 100,925.31

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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.