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Finding the Fourth Proportional to 98,006.40, 146,815.20 and 56,404.80

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Solution

The fourth proportional to 98,006.40, 146,815.20 and 56,404.80 is: 84,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,006.40 : 146,815.20 = 56,404.80 : x
  2. Step 2: Convert to fraction form
    98,006.40/146,815.20 = 56,404.80/x
  3. Step 3: Cross multiply
    98,006.40x = 146,815.20 × 56,404.80
  4. Step 4: Simplify right side
    98,006.40x = 8,281,081,992.96
  5. Step 5: Solve for x
    x = 8,281,081,992.96/98,006.40
  6. Step 6: Final answer
    x = 84,495.32

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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.