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Finding the Fourth Proportional to 115,200.65, 158,977.62 and 64,216.62

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Solution

The fourth proportional to 115,200.65, 158,977.62 and 64,216.62 is: 88,619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,200.65 : 158,977.62 = 64,216.62 : x
  2. Step 2: Convert to fraction form
    115,200.65/158,977.62 = 64,216.62/x
  3. Step 3: Cross multiply
    115,200.65x = 158,977.62 × 64,216.62
  4. Step 4: Simplify right side
    115,200.65x = 10,209,005,412.04
  5. Step 5: Solve for x
    x = 10,209,005,412.04/115,200.65
  6. Step 6: Final answer
    x = 88,619.34

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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.