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Finding the Fourth Proportional to 98,007.40, 146,816.70 and 56,405.80

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Solution

The fourth proportional to 98,007.40, 146,816.70 and 56,405.80 is: 84,496.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,007.40 : 146,816.70 = 56,405.80 : x
  2. Step 2: Convert to fraction form
    98,007.40/146,816.70 = 56,405.80/x
  3. Step 3: Cross multiply
    98,007.40x = 146,816.70 × 56,405.80
  4. Step 4: Simplify right side
    98,007.40x = 8,281,313,416.86
  5. Step 5: Solve for x
    x = 8,281,313,416.86/98,007.40
  6. Step 6: Final answer
    x = 84,496.82

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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.