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Finding the Fourth Proportional to 152,007.99, 209,791.88 and 87,475.89

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Solution

The fourth proportional to 152,007.99, 209,791.88 and 87,475.89 is: 120,728.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,007.99 : 209,791.88 = 87,475.89 : x
  2. Step 2: Convert to fraction form
    152,007.99/209,791.88 = 87,475.89/x
  3. Step 3: Cross multiply
    152,007.99x = 209,791.88 × 87,475.89
  4. Step 4: Simplify right side
    152,007.99x = 18,351,731,417.77
  5. Step 5: Solve for x
    x = 18,351,731,417.77/152,007.99
  6. Step 6: Final answer
    x = 120,728.73

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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.