Home / 109,870.05-164,805.08-99,372.45

Finding the Fourth Proportional to 109,870.05, 164,805.08 and 99,372.45

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Solution

The fourth proportional to 109,870.05, 164,805.08 and 99,372.45 is: 149,058.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,870.05 : 164,805.08 = 99,372.45 : x
  2. Step 2: Convert to fraction form
    109,870.05/164,805.08 = 99,372.45/x
  3. Step 3: Cross multiply
    109,870.05x = 164,805.08 × 99,372.45
  4. Step 4: Simplify right side
    109,870.05x = 16,377,084,075.18
  5. Step 5: Solve for x
    x = 16,377,084,075.18/109,870.05
  6. Step 6: Final answer
    x = 149,058.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.