Home / 113,855.56-157,154.04-66,130.36

Finding the Fourth Proportional to 113,855.56, 157,154.04 and 66,130.36

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Solution

The fourth proportional to 113,855.56, 157,154.04 and 66,130.36 is: 91,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,855.56 : 157,154.04 = 66,130.36 : x
  2. Step 2: Convert to fraction form
    113,855.56/157,154.04 = 66,130.36/x
  3. Step 3: Cross multiply
    113,855.56x = 157,154.04 × 66,130.36
  4. Step 4: Simplify right side
    113,855.56x = 10,392,653,240.65
  5. Step 5: Solve for x
    x = 10,392,653,240.65/113,855.56
  6. Step 6: Final answer
    x = 91,279.28

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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.