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Finding the Fourth Proportional to 117,325.32, 161,866.50 and 77,060.90

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Solution

The fourth proportional to 117,325.32, 161,866.50 and 77,060.90 is: 106,316.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,325.32 : 161,866.50 = 77,060.90 : x
  2. Step 2: Convert to fraction form
    117,325.32/161,866.50 = 77,060.90/x
  3. Step 3: Cross multiply
    117,325.32x = 161,866.50 × 77,060.90
  4. Step 4: Simplify right side
    117,325.32x = 12,473,578,169.85
  5. Step 5: Solve for x
    x = 12,473,578,169.85/117,325.32
  6. Step 6: Final answer
    x = 106,316.17

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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.