Home / 104,258.46-143,876.80-56,511.78

Finding the Fourth Proportional to 104,258.46, 143,876.80 and 56,511.78

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Solution

The fourth proportional to 104,258.46, 143,876.80 and 56,511.78 is: 77,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,258.46 : 143,876.80 = 56,511.78 : x
  2. Step 2: Convert to fraction form
    104,258.46/143,876.80 = 56,511.78/x
  3. Step 3: Cross multiply
    104,258.46x = 143,876.80 × 56,511.78
  4. Step 4: Simplify right side
    104,258.46x = 8,130,734,068.70
  5. Step 5: Solve for x
    x = 8,130,734,068.70/104,258.46
  6. Step 6: Final answer
    x = 77,986.32

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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.