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Finding the Fourth Proportional to 115,089.66, 158,866.92 and 85,116.22

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Solution

The fourth proportional to 115,089.66, 158,866.92 and 85,116.22 is: 117,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,089.66 : 158,866.92 = 85,116.22 : x
  2. Step 2: Convert to fraction form
    115,089.66/158,866.92 = 85,116.22/x
  3. Step 3: Cross multiply
    115,089.66x = 158,866.92 × 85,116.22
  4. Step 4: Simplify right side
    115,089.66x = 13,522,151,316.28
  5. Step 5: Solve for x
    x = 13,522,151,316.28/115,089.66
  6. Step 6: Final answer
    x = 117,492.32

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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.