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Finding the Fourth Proportional to 123,720.51, 170,734.33 and 70,004.45

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Solution

The fourth proportional to 123,720.51, 170,734.33 and 70,004.45 is: 96,606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,720.51 : 170,734.33 = 70,004.45 : x
  2. Step 2: Convert to fraction form
    123,720.51/170,734.33 = 70,004.45/x
  3. Step 3: Cross multiply
    123,720.51x = 170,734.33 × 70,004.45
  4. Step 4: Simplify right side
    123,720.51x = 11,952,163,382.11
  5. Step 5: Solve for x
    x = 11,952,163,382.11/123,720.51
  6. Step 6: Final answer
    x = 96,606.16

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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.