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Finding the Fourth Proportional to 154,607.88, 212,994.72 and 145,307.64

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Solution

The fourth proportional to 154,607.88, 212,994.72 and 145,307.64 is: 200,182.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,607.88 : 212,994.72 = 145,307.64 : x
  2. Step 2: Convert to fraction form
    154,607.88/212,994.72 = 145,307.64/x
  3. Step 3: Cross multiply
    154,607.88x = 212,994.72 × 145,307.64
  4. Step 4: Simplify right side
    154,607.88x = 30,949,760,095.66
  5. Step 5: Solve for x
    x = 30,949,760,095.66/154,607.88
  6. Step 6: Final answer
    x = 200,182.29

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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.