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Finding the Fourth Proportional to 100,877.00, 139,210.25 and 55,554.58

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Solution

The fourth proportional to 100,877.00, 139,210.25 and 55,554.58 is: 76,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,877.00 : 139,210.25 = 55,554.58 : x
  2. Step 2: Convert to fraction form
    100,877.00/139,210.25 = 55,554.58/x
  3. Step 3: Cross multiply
    100,877.00x = 139,210.25 × 55,554.58
  4. Step 4: Simplify right side
    100,877.00x = 7,733,767,258.21
  5. Step 5: Solve for x
    x = 7,733,767,258.21/100,877.00
  6. Step 6: Final answer
    x = 76,665.32

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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.