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Finding the Fourth Proportional to 98,379.70, 146,802.24 and 87,776.83

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Solution

The fourth proportional to 98,379.70, 146,802.24 and 87,776.83 is: 130,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,379.70 : 146,802.24 = 87,776.83 : x
  2. Step 2: Convert to fraction form
    98,379.70/146,802.24 = 87,776.83/x
  3. Step 3: Cross multiply
    98,379.70x = 146,802.24 × 87,776.83
  4. Step 4: Simplify right side
    98,379.70x = 12,885,835,447.60
  5. Step 5: Solve for x
    x = 12,885,835,447.60/98,379.70
  6. Step 6: Final answer
    x = 130,980.64

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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.