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Finding the Fourth Proportional to 117,465.51, 162,110.39 and 66,478.22

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Solution

The fourth proportional to 117,465.51, 162,110.39 and 66,478.22 is: 91,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,465.51 : 162,110.39 = 66,478.22 : x
  2. Step 2: Convert to fraction form
    117,465.51/162,110.39 = 66,478.22/x
  3. Step 3: Cross multiply
    117,465.51x = 162,110.39 × 66,478.22
  4. Step 4: Simplify right side
    117,465.51x = 10,776,809,027.76
  5. Step 5: Solve for x
    x = 10,776,809,027.76/117,465.51
  6. Step 6: Final answer
    x = 91,744.45

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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.