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Finding the Fourth Proportional to 97,829.70, 146,744.55 and 78,000.90

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Solution

The fourth proportional to 97,829.70, 146,744.55 and 78,000.90 is: 117,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,829.70 : 146,744.55 = 78,000.90 : x
  2. Step 2: Convert to fraction form
    97,829.70/146,744.55 = 78,000.90/x
  3. Step 3: Cross multiply
    97,829.70x = 146,744.55 × 78,000.90
  4. Step 4: Simplify right side
    97,829.70x = 11,446,206,970.10
  5. Step 5: Solve for x
    x = 11,446,206,970.10/97,829.70
  6. Step 6: Final answer
    x = 117,001.35

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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.