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Finding the Fourth Proportional to 159,175.49, 219,661.10 and 90,278.06

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Solution

The fourth proportional to 159,175.49, 219,661.10 and 90,278.06 is: 124,583.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,175.49 : 219,661.10 = 90,278.06 : x
  2. Step 2: Convert to fraction form
    159,175.49/219,661.10 = 90,278.06/x
  3. Step 3: Cross multiply
    159,175.49x = 219,661.10 × 90,278.06
  4. Step 4: Simplify right side
    159,175.49x = 19,830,576,415.77
  5. Step 5: Solve for x
    x = 19,830,576,415.77/159,175.49
  6. Step 6: Final answer
    x = 124,583.11

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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.