Home / 129,686.13-178,968.24-73,097.51

Finding the Fourth Proportional to 129,686.13, 178,968.24 and 73,097.51

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Solution

The fourth proportional to 129,686.13, 178,968.24 and 73,097.51 is: 100,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.13 : 178,968.24 = 73,097.51 : x
  2. Step 2: Convert to fraction form
    129,686.13/178,968.24 = 73,097.51/x
  3. Step 3: Cross multiply
    129,686.13x = 178,968.24 × 73,097.51
  4. Step 4: Simplify right side
    129,686.13x = 13,082,131,818.24
  5. Step 5: Solve for x
    x = 13,082,131,818.24/129,686.13
  6. Step 6: Final answer
    x = 100,875.34

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1.5x scale

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.