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Finding the Fourth Proportional to 151,486.45, 209,041.74 and 83,499.66

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Solution

The fourth proportional to 151,486.45, 209,041.74 and 83,499.66 is: 115,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,486.45 : 209,041.74 = 83,499.66 : x
  2. Step 2: Convert to fraction form
    151,486.45/209,041.74 = 83,499.66/x
  3. Step 3: Cross multiply
    151,486.45x = 209,041.74 × 83,499.66
  4. Step 4: Simplify right side
    151,486.45x = 17,454,914,215.81
  5. Step 5: Solve for x
    x = 17,454,914,215.81/151,486.45
  6. Step 6: Final answer
    x = 115,224.26

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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.