Home / 89,197.63-123,157.31-57,421.89

Finding the Fourth Proportional to 89,197.63, 123,157.31 and 57,421.89

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Solution

The fourth proportional to 89,197.63, 123,157.31 and 57,421.89 is: 79,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,197.63 : 123,157.31 = 57,421.89 : x
  2. Step 2: Convert to fraction form
    89,197.63/123,157.31 = 57,421.89/x
  3. Step 3: Cross multiply
    89,197.63x = 123,157.31 × 57,421.89
  4. Step 4: Simplify right side
    89,197.63x = 7,071,925,220.41
  5. Step 5: Solve for x
    x = 7,071,925,220.41/89,197.63
  6. Step 6: Final answer
    x = 79,283.78

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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.