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Finding the Fourth Proportional to 118,930.43, 164,210.10 and 76,562.77

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Solution

The fourth proportional to 118,930.43, 164,210.10 and 76,562.77 is: 105,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,930.43 : 164,210.10 = 76,562.77 : x
  2. Step 2: Convert to fraction form
    118,930.43/164,210.10 = 76,562.77/x
  3. Step 3: Cross multiply
    118,930.43x = 164,210.10 × 76,562.77
  4. Step 4: Simplify right side
    118,930.43x = 12,572,380,117.98
  5. Step 5: Solve for x
    x = 12,572,380,117.98/118,930.43
  6. Step 6: Final answer
    x = 105,712.05

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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.