Home / 93,988.59-140,646.06-81,381.85

Finding the Fourth Proportional to 93,988.59, 140,646.06 and 81,381.85

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Solution

The fourth proportional to 93,988.59, 140,646.06 and 81,381.85 is: 121,781.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,988.59 : 140,646.06 = 81,381.85 : x
  2. Step 2: Convert to fraction form
    93,988.59/140,646.06 = 81,381.85/x
  3. Step 3: Cross multiply
    93,988.59x = 140,646.06 × 81,381.85
  4. Step 4: Simplify right side
    93,988.59x = 11,446,036,558.01
  5. Step 5: Solve for x
    x = 11,446,036,558.01/93,988.59
  6. Step 6: Final answer
    x = 121,781.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.