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Finding the Fourth Proportional to 98,401.48, 146,834.47 and 87,798.58

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Solution

The fourth proportional to 98,401.48, 146,834.47 and 87,798.58 is: 131,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,401.48 : 146,834.47 = 87,798.58 : x
  2. Step 2: Convert to fraction form
    98,401.48/146,834.47 = 87,798.58/x
  3. Step 3: Cross multiply
    98,401.48x = 146,834.47 × 87,798.58
  4. Step 4: Simplify right side
    98,401.48x = 12,891,858,529.66
  5. Step 5: Solve for x
    x = 12,891,858,529.66/98,401.48
  6. Step 6: Final answer
    x = 131,012.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.