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Finding the Fourth Proportional to 102,255, 141,111.90 and 57,543.96

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Solution

The fourth proportional to 102,255, 141,111.90 and 57,543.96 is: 79,410.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,255 : 141,111.90 = 57,543.96 : x
  2. Step 2: Convert to fraction form
    102,255/141,111.90 = 57,543.96/x
  3. Step 3: Cross multiply
    102,255x = 141,111.90 × 57,543.96
  4. Step 4: Simplify right side
    102,255x = 8,120,137,529.12
  5. Step 5: Solve for x
    x = 8,120,137,529.12/102,255
  6. Step 6: Final answer
    x = 79,410.66

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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.