Home / 145,214.40-217,721.70-73,999.20

Finding the Fourth Proportional to 145,214.40, 217,721.70 and 73,999.20

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Solution

The fourth proportional to 145,214.40, 217,721.70 and 73,999.20 is: 110,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,214.40 : 217,721.70 = 73,999.20 : x
  2. Step 2: Convert to fraction form
    145,214.40/217,721.70 = 73,999.20/x
  3. Step 3: Cross multiply
    145,214.40x = 217,721.70 × 73,999.20
  4. Step 4: Simplify right side
    145,214.40x = 16,111,231,622.64
  5. Step 5: Solve for x
    x = 16,111,231,622.64/145,214.40
  6. Step 6: Final answer
    x = 110,947.89

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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.