Home / 117,373.50-161,983.80-66,386.70

Finding the Fourth Proportional to 117,373.50, 161,983.80 and 66,386.70

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Solution

The fourth proportional to 117,373.50, 161,983.80 and 66,386.70 is: 91,618.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,373.50 : 161,983.80 = 66,386.70 : x
  2. Step 2: Convert to fraction form
    117,373.50/161,983.80 = 66,386.70/x
  3. Step 3: Cross multiply
    117,373.50x = 161,983.80 × 66,386.70
  4. Step 4: Simplify right side
    117,373.50x = 10,753,569,935.46
  5. Step 5: Solve for x
    x = 10,753,569,935.46/117,373.50
  6. Step 6: Final answer
    x = 91,618.38

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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.