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Finding the Fourth Proportional to 149,254.76, 205,621.17 and 103,854.77

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Solution

The fourth proportional to 149,254.76, 205,621.17 and 103,854.77 is: 143,075.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,254.76 : 205,621.17 = 103,854.77 : x
  2. Step 2: Convert to fraction form
    149,254.76/205,621.17 = 103,854.77/x
  3. Step 3: Cross multiply
    149,254.76x = 205,621.17 × 103,854.77
  4. Step 4: Simplify right side
    149,254.76x = 21,354,738,671.00
  5. Step 5: Solve for x
    x = 21,354,738,671.00/149,254.76
  6. Step 6: Final answer
    x = 143,075.76

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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.