Home / 152,900.87-229,157.55-86,378.48

Finding the Fourth Proportional to 152,900.87, 229,157.55 and 86,378.48

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Solution

The fourth proportional to 152,900.87, 229,157.55 and 86,378.48 is: 129,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,900.87 : 229,157.55 = 86,378.48 : x
  2. Step 2: Convert to fraction form
    152,900.87/229,157.55 = 86,378.48/x
  3. Step 3: Cross multiply
    152,900.87x = 229,157.55 × 86,378.48
  4. Step 4: Simplify right side
    152,900.87x = 19,794,280,849.52
  5. Step 5: Solve for x
    x = 19,794,280,849.52/152,900.87
  6. Step 6: Final answer
    x = 129,458.26

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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.