Home / 106,985.13-147,644.55-64,542.75

Finding the Fourth Proportional to 106,985.13, 147,644.55 and 64,542.75

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Solution

The fourth proportional to 106,985.13, 147,644.55 and 64,542.75 is: 89,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,985.13 : 147,644.55 = 64,542.75 : x
  2. Step 2: Convert to fraction form
    106,985.13/147,644.55 = 64,542.75/x
  3. Step 3: Cross multiply
    106,985.13x = 147,644.55 × 64,542.75
  4. Step 4: Simplify right side
    106,985.13x = 9,529,385,279.51
  5. Step 5: Solve for x
    x = 9,529,385,279.51/106,985.13
  6. Step 6: Final answer
    x = 89,072.05

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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.