Home / 158,528.14-218,764.09-86,905.71

Finding the Fourth Proportional to 158,528.14, 218,764.09 and 86,905.71

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Solution

The fourth proportional to 158,528.14, 218,764.09 and 86,905.71 is: 119,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,528.14 : 218,764.09 = 86,905.71 : x
  2. Step 2: Convert to fraction form
    158,528.14/218,764.09 = 86,905.71/x
  3. Step 3: Cross multiply
    158,528.14x = 218,764.09 × 86,905.71
  4. Step 4: Simplify right side
    158,528.14x = 19,011,848,672.59
  5. Step 5: Solve for x
    x = 19,011,848,672.59/158,528.14
  6. Step 6: Final answer
    x = 119,927.28

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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.