Home / 205,710.03-284,055.05-129,356.90

Finding the Fourth Proportional to 205,710.03, 284,055.05 and 129,356.90

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Solution

The fourth proportional to 205,710.03, 284,055.05 and 129,356.90 is: 178,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,710.03 : 284,055.05 = 129,356.90 : x
  2. Step 2: Convert to fraction form
    205,710.03/284,055.05 = 129,356.90/x
  3. Step 3: Cross multiply
    205,710.03x = 284,055.05 × 129,356.90
  4. Step 4: Simplify right side
    205,710.03x = 36,744,480,665.67
  5. Step 5: Solve for x
    x = 36,744,480,665.67/205,710.03
  6. Step 6: Final answer
    x = 178,622.70

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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.