Home / 117,346.06-161,895.13-77,081.50

Finding the Fourth Proportional to 117,346.06, 161,895.13 and 77,081.50

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Solution

The fourth proportional to 117,346.06, 161,895.13 and 77,081.50 is: 106,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,346.06 : 161,895.13 = 77,081.50 : x
  2. Step 2: Convert to fraction form
    117,346.06/161,895.13 = 77,081.50/x
  3. Step 3: Cross multiply
    117,346.06x = 161,895.13 × 77,081.50
  4. Step 4: Simplify right side
    117,346.06x = 12,479,119,463.10
  5. Step 5: Solve for x
    x = 12,479,119,463.10/117,346.06
  6. Step 6: Final answer
    x = 106,344.60

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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.