Home / 120,382,772.40-166,142,408.04-71,490,200.40

Finding the Fourth Proportional to 120,382,772.40, 166,142,408.04 and 71,490,200.40

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Solution

The fourth proportional to 120,382,772.40, 166,142,408.04 and 71,490,200.40 is: 98,664,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382,772.40 : 166,142,408.04 = 71,490,200.40 : x
  2. Step 2: Convert to fraction form
    120,382,772.40/166,142,408.04 = 71,490,200.40/x
  3. Step 3: Cross multiply
    120,382,772.40x = 166,142,408.04 × 71,490,200.40
  4. Step 4: Simplify right side
    120,382,772.40x = 11,877,554,045,718,172
  5. Step 5: Solve for x
    x = 11,877,554,045,718,172/120,382,772.40
  6. Step 6: Final answer
    x = 98,664,898.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.