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Finding the Fourth Proportional to 99,580.40, 149,662.20 and 97,830.80

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Solution

The fourth proportional to 99,580.40, 149,662.20 and 97,830.80 is: 147,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,580.40 : 149,662.20 = 97,830.80 : x
  2. Step 2: Convert to fraction form
    99,580.40/149,662.20 = 97,830.80/x
  3. Step 3: Cross multiply
    99,580.40x = 149,662.20 × 97,830.80
  4. Step 4: Simplify right side
    99,580.40x = 14,641,572,755.76
  5. Step 5: Solve for x
    x = 14,641,572,755.76/99,580.40
  6. Step 6: Final answer
    x = 147,032.68

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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.