Home / 87,683.64-121,018.56-84,767.64

Finding the Fourth Proportional to 87,683.64, 121,018.56 and 84,767.64

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Solution

The fourth proportional to 87,683.64, 121,018.56 and 84,767.64 is: 116,993.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,683.64 : 121,018.56 = 84,767.64 : x
  2. Step 2: Convert to fraction form
    87,683.64/121,018.56 = 84,767.64/x
  3. Step 3: Cross multiply
    87,683.64x = 121,018.56 × 84,767.64
  4. Step 4: Simplify right side
    87,683.64x = 10,258,457,727.40
  5. Step 5: Solve for x
    x = 10,258,457,727.40/87,683.64
  6. Step 6: Final answer
    x = 116,993.98

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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.