Home / 145,913.13-201,360.06-78,845.13

Finding the Fourth Proportional to 145,913.13, 201,360.06 and 78,845.13

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Solution

The fourth proportional to 145,913.13, 201,360.06 and 78,845.13 is: 108,806.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,913.13 : 201,360.06 = 78,845.13 : x
  2. Step 2: Convert to fraction form
    145,913.13/201,360.06 = 78,845.13/x
  3. Step 3: Cross multiply
    145,913.13x = 201,360.06 × 78,845.13
  4. Step 4: Simplify right side
    145,913.13x = 15,876,260,107.51
  5. Step 5: Solve for x
    x = 15,876,260,107.51/145,913.13
  6. Step 6: Final answer
    x = 108,806.25

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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.