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Finding the Fourth Proportional to 113,466.40, 169,940.40 and 66,810.40

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Solution

The fourth proportional to 113,466.40, 169,940.40 and 66,810.40 is: 100,062.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,466.40 : 169,940.40 = 66,810.40 : x
  2. Step 2: Convert to fraction form
    113,466.40/169,940.40 = 66,810.40/x
  3. Step 3: Cross multiply
    113,466.40x = 169,940.40 × 66,810.40
  4. Step 4: Simplify right side
    113,466.40x = 11,353,786,100.16
  5. Step 5: Solve for x
    x = 11,353,786,100.16/113,466.40
  6. Step 6: Final answer
    x = 100,062.98

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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.