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Finding the Fourth Proportional to 154,373.76, 213,075.84 and 87,344.64

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Solution

The fourth proportional to 154,373.76, 213,075.84 and 87,344.64 is: 120,558.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,373.76 : 213,075.84 = 87,344.64 : x
  2. Step 2: Convert to fraction form
    154,373.76/213,075.84 = 87,344.64/x
  3. Step 3: Cross multiply
    154,373.76x = 213,075.84 × 87,344.64
  4. Step 4: Simplify right side
    154,373.76x = 18,611,032,537.50
  5. Step 5: Solve for x
    x = 18,611,032,537.50/154,373.76
  6. Step 6: Final answer
    x = 120,558.26

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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.