Home / 144,772.10-217,056.90-85,577.30

Finding the Fourth Proportional to 144,772.10, 217,056.90 and 85,577.30

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Solution

The fourth proportional to 144,772.10, 217,056.90 and 85,577.30 is: 128,306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,772.10 : 217,056.90 = 85,577.30 : x
  2. Step 2: Convert to fraction form
    144,772.10/217,056.90 = 85,577.30/x
  3. Step 3: Cross multiply
    144,772.10x = 217,056.90 × 85,577.30
  4. Step 4: Simplify right side
    144,772.10x = 18,575,143,448.37
  5. Step 5: Solve for x
    x = 18,575,143,448.37/144,772.10
  6. Step 6: Final answer
    x = 128,306.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.