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Finding the Fourth Proportional to 158,756.88, 219,050.28 and 91,650

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Solution

The fourth proportional to 158,756.88, 219,050.28 and 91,650 is: 126,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,756.88 : 219,050.28 = 91,650 : x
  2. Step 2: Convert to fraction form
    158,756.88/219,050.28 = 91,650/x
  3. Step 3: Cross multiply
    158,756.88x = 219,050.28 × 91,650
  4. Step 4: Simplify right side
    158,756.88x = 20,075,958,162
  5. Step 5: Solve for x
    x = 20,075,958,162/158,756.88
  6. Step 6: Final answer
    x = 126,457.25

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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.