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Finding the Fourth Proportional to 155,874.72, 215,106.98 and 84,254.74

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Solution

The fourth proportional to 155,874.72, 215,106.98 and 84,254.74 is: 116,271.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,874.72 : 215,106.98 = 84,254.74 : x
  2. Step 2: Convert to fraction form
    155,874.72/215,106.98 = 84,254.74/x
  3. Step 3: Cross multiply
    155,874.72x = 215,106.98 × 84,254.74
  4. Step 4: Simplify right side
    155,874.72x = 18,123,782,672.09
  5. Step 5: Solve for x
    x = 18,123,782,672.09/155,874.72
  6. Step 6: Final answer
    x = 116,271.47

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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.