Home / 159,515.30-220,128.09-87,901.94

Finding the Fourth Proportional to 159,515.30, 220,128.09 and 87,901.94

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Solution

The fourth proportional to 159,515.30, 220,128.09 and 87,901.94 is: 121,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,515.30 : 220,128.09 = 87,901.94 : x
  2. Step 2: Convert to fraction form
    159,515.30/220,128.09 = 87,901.94/x
  3. Step 3: Cross multiply
    159,515.30x = 220,128.09 × 87,901.94
  4. Step 4: Simplify right side
    159,515.30x = 19,349,686,159.49
  5. Step 5: Solve for x
    x = 19,349,686,159.49/159,515.30
  6. Step 6: Final answer
    x = 121,303.01

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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.