Home / 129,816.61-179,005.69-84,410.38

Finding the Fourth Proportional to 129,816.61, 179,005.69 and 84,410.38

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Solution

The fourth proportional to 129,816.61, 179,005.69 and 84,410.38 is: 116,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816.61 : 179,005.69 = 84,410.38 : x
  2. Step 2: Convert to fraction form
    129,816.61/179,005.69 = 84,410.38/x
  3. Step 3: Cross multiply
    129,816.61x = 179,005.69 × 84,410.38
  4. Step 4: Simplify right side
    129,816.61x = 15,109,938,315.06
  5. Step 5: Solve for x
    x = 15,109,938,315.06/129,816.61
  6. Step 6: Final answer
    x = 116,394.49

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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.