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Finding the Fourth Proportional to 152,423.72, 210,346.85 and 87,891.83

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Solution

The fourth proportional to 152,423.72, 210,346.85 and 87,891.83 is: 121,291.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,423.72 : 210,346.85 = 87,891.83 : x
  2. Step 2: Convert to fraction form
    152,423.72/210,346.85 = 87,891.83/x
  3. Step 3: Cross multiply
    152,423.72x = 210,346.85 × 87,891.83
  4. Step 4: Simplify right side
    152,423.72x = 18,487,769,141.78
  5. Step 5: Solve for x
    x = 18,487,769,141.78/152,423.72
  6. Step 6: Final answer
    x = 121,291.94

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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.