Home / 136,915.84-188,937.10-76,474.45

Finding the Fourth Proportional to 136,915.84, 188,937.10 and 76,474.45

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Solution

The fourth proportional to 136,915.84, 188,937.10 and 76,474.45 is: 105,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,915.84 : 188,937.10 = 76,474.45 : x
  2. Step 2: Convert to fraction form
    136,915.84/188,937.10 = 76,474.45/x
  3. Step 3: Cross multiply
    136,915.84x = 188,937.10 × 76,474.45
  4. Step 4: Simplify right side
    136,915.84x = 14,448,860,807.10
  5. Step 5: Solve for x
    x = 14,448,860,807.10/136,915.84
  6. Step 6: Final answer
    x = 105,530.97

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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.