Home / 117,330.81-161,874.09-77,066.40

Finding the Fourth Proportional to 117,330.81, 161,874.09 and 77,066.40

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Solution

The fourth proportional to 117,330.81, 161,874.09 and 77,066.40 is: 106,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,330.81 : 161,874.09 = 77,066.40 : x
  2. Step 2: Convert to fraction form
    117,330.81/161,874.09 = 77,066.40/x
  3. Step 3: Cross multiply
    117,330.81x = 161,874.09 × 77,066.40
  4. Step 4: Simplify right side
    117,330.81x = 12,475,053,369.58
  5. Step 5: Solve for x
    x = 12,475,053,369.58/117,330.81
  6. Step 6: Final answer
    x = 106,323.76

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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.