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Finding the Fourth Proportional to 115,130.80, 158,888.64 and 64,146.88

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Solution

The fourth proportional to 115,130.80, 158,888.64 and 64,146.88 is: 88,527.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,130.80 : 158,888.64 = 64,146.88 : x
  2. Step 2: Convert to fraction form
    115,130.80/158,888.64 = 64,146.88/x
  3. Step 3: Cross multiply
    115,130.80x = 158,888.64 × 64,146.88
  4. Step 4: Simplify right side
    115,130.80x = 10,192,210,523.44
  5. Step 5: Solve for x
    x = 10,192,210,523.44/115,130.80
  6. Step 6: Final answer
    x = 88,527.23

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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.