Home / 92,966.50-128,631.54-81,054.64

Finding the Fourth Proportional to 92,966.50, 128,631.54 and 81,054.64

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Solution

The fourth proportional to 92,966.50, 128,631.54 and 81,054.64 is: 112,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,966.50 : 128,631.54 = 81,054.64 : x
  2. Step 2: Convert to fraction form
    92,966.50/128,631.54 = 81,054.64/x
  3. Step 3: Cross multiply
    92,966.50x = 128,631.54 × 81,054.64
  4. Step 4: Simplify right side
    92,966.50x = 10,426,183,167.35
  5. Step 5: Solve for x
    x = 10,426,183,167.35/92,966.50
  6. Step 6: Final answer
    x = 112,149.89

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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.