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Finding the Fourth Proportional to 113,113.20, 169,669.80 and 103,490.40

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Solution

The fourth proportional to 113,113.20, 169,669.80 and 103,490.40 is: 155,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,113.20 : 169,669.80 = 103,490.40 : x
  2. Step 2: Convert to fraction form
    113,113.20/169,669.80 = 103,490.40/x
  3. Step 3: Cross multiply
    113,113.20x = 169,669.80 × 103,490.40
  4. Step 4: Simplify right side
    113,113.20x = 17,559,195,469.92
  5. Step 5: Solve for x
    x = 17,559,195,469.92/113,113.20
  6. Step 6: Final answer
    x = 155,235.60

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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.