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Finding the Fourth Proportional to 146,053.64, 201,554.18 and 78,985.64

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Solution

The fourth proportional to 146,053.64, 201,554.18 and 78,985.64 is: 109,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,053.64 : 201,554.18 = 78,985.64 : x
  2. Step 2: Convert to fraction form
    146,053.64/201,554.18 = 78,985.64/x
  3. Step 3: Cross multiply
    146,053.64x = 201,554.18 × 78,985.64
  4. Step 4: Simplify right side
    146,053.64x = 15,919,885,901.98
  5. Step 5: Solve for x
    x = 15,919,885,901.98/146,053.64
  6. Step 6: Final answer
    x = 109,000.27

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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.