Home / 123,054.13-169,814.81-66,465.50

Finding the Fourth Proportional to 123,054.13, 169,814.81 and 66,465.50

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Solution

The fourth proportional to 123,054.13, 169,814.81 and 66,465.50 is: 91,722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,054.13 : 169,814.81 = 66,465.50 : x
  2. Step 2: Convert to fraction form
    123,054.13/169,814.81 = 66,465.50/x
  3. Step 3: Cross multiply
    123,054.13x = 169,814.81 × 66,465.50
  4. Step 4: Simplify right side
    123,054.13x = 11,286,826,254.06
  5. Step 5: Solve for x
    x = 11,286,826,254.06/123,054.13
  6. Step 6: Final answer
    x = 91,722.45

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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.