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Finding the Fourth Proportional to 115,299.89, 159,106.99 and 66,898.07

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Solution

The fourth proportional to 115,299.89, 159,106.99 and 66,898.07 is: 92,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,299.89 : 159,106.99 = 66,898.07 : x
  2. Step 2: Convert to fraction form
    115,299.89/159,106.99 = 66,898.07/x
  3. Step 3: Cross multiply
    115,299.89x = 159,106.99 × 66,898.07
  4. Step 4: Simplify right side
    115,299.89x = 10,643,950,554.51
  5. Step 5: Solve for x
    x = 10,643,950,554.51/115,299.89
  6. Step 6: Final answer
    x = 92,315.36

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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.