Home / 153,558.45-211,905.18-85,571.91

Finding the Fourth Proportional to 153,558.45, 211,905.18 and 85,571.91

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Solution

The fourth proportional to 153,558.45, 211,905.18 and 85,571.91 is: 118,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,558.45 : 211,905.18 = 85,571.91 : x
  2. Step 2: Convert to fraction form
    153,558.45/211,905.18 = 85,571.91/x
  3. Step 3: Cross multiply
    153,558.45x = 211,905.18 × 85,571.91
  4. Step 4: Simplify right side
    153,558.45x = 18,133,130,991.49
  5. Step 5: Solve for x
    x = 18,133,130,991.49/153,558.45
  6. Step 6: Final answer
    x = 118,086.18

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1.5x scale

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.