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Finding the Fourth Proportional to 97,400.70, 146,101.05 and 79,890.30

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Solution

The fourth proportional to 97,400.70, 146,101.05 and 79,890.30 is: 119,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,400.70 : 146,101.05 = 79,890.30 : x
  2. Step 2: Convert to fraction form
    97,400.70/146,101.05 = 79,890.30/x
  3. Step 3: Cross multiply
    97,400.70x = 146,101.05 × 79,890.30
  4. Step 4: Simplify right side
    97,400.70x = 11,672,056,714.82
  5. Step 5: Solve for x
    x = 11,672,056,714.82/97,400.70
  6. Step 6: Final answer
    x = 119,835.45

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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.