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Finding the Fourth Proportional to 115,197.66, 158,968.98 and 64,208.16

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Solution

The fourth proportional to 115,197.66, 158,968.98 and 64,208.16 is: 88,605.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,197.66 : 158,968.98 = 64,208.16 : x
  2. Step 2: Convert to fraction form
    115,197.66/158,968.98 = 64,208.16/x
  3. Step 3: Cross multiply
    115,197.66x = 158,968.98 × 64,208.16
  4. Step 4: Simplify right side
    115,197.66x = 10,207,105,702.88
  5. Step 5: Solve for x
    x = 10,207,105,702.88/115,197.66
  6. Step 6: Final answer
    x = 88,605.15

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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.