Home / 387,981.10-581,996.25-121,752.12

Finding the Fourth Proportional to 387,981.10, 581,996.25 and 121,752.12

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Solution

The fourth proportional to 387,981.10, 581,996.25 and 121,752.12 is: 182,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,981.10 : 581,996.25 = 121,752.12 : x
  2. Step 2: Convert to fraction form
    387,981.10/581,996.25 = 121,752.12/x
  3. Step 3: Cross multiply
    387,981.10x = 581,996.25 × 121,752.12
  4. Step 4: Simplify right side
    387,981.10x = 70,859,277,269.55
  5. Step 5: Solve for x
    x = 70,859,277,269.55/387,981.10
  6. Step 6: Final answer
    x = 182,635.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.