Home / 144,905.10-217,256.40-85,710.30

Finding the Fourth Proportional to 144,905.10, 217,256.40 and 85,710.30

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Solution

The fourth proportional to 144,905.10, 217,256.40 and 85,710.30 is: 128,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,905.10 : 217,256.40 = 85,710.30 : x
  2. Step 2: Convert to fraction form
    144,905.10/217,256.40 = 85,710.30/x
  3. Step 3: Cross multiply
    144,905.10x = 217,256.40 × 85,710.30
  4. Step 4: Simplify right side
    144,905.10x = 18,621,111,220.92
  5. Step 5: Solve for x
    x = 18,621,111,220.92/144,905.10
  6. Step 6: Final answer
    x = 128,505.56

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1.5x scale

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.