Home / 106,720.10-147,285.15-61,400.06

Finding the Fourth Proportional to 106,720.10, 147,285.15 and 61,400.06

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Solution

The fourth proportional to 106,720.10, 147,285.15 and 61,400.06 is: 84,738.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,720.10 : 147,285.15 = 61,400.06 : x
  2. Step 2: Convert to fraction form
    106,720.10/147,285.15 = 61,400.06/x
  3. Step 3: Cross multiply
    106,720.10x = 147,285.15 × 61,400.06
  4. Step 4: Simplify right side
    106,720.10x = 9,043,317,047.11
  5. Step 5: Solve for x
    x = 9,043,317,047.11/106,720.10
  6. Step 6: Final answer
    x = 84,738.65

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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.