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Finding the Fourth Proportional to 103,258.80, 154,693.80 and 53,168.40

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Solution

The fourth proportional to 103,258.80, 154,693.80 and 53,168.40 is: 79,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,258.80 : 154,693.80 = 53,168.40 : x
  2. Step 2: Convert to fraction form
    103,258.80/154,693.80 = 53,168.40/x
  3. Step 3: Cross multiply
    103,258.80x = 154,693.80 × 53,168.40
  4. Step 4: Simplify right side
    103,258.80x = 8,224,821,835.92
  5. Step 5: Solve for x
    x = 8,224,821,835.92/103,258.80
  6. Step 6: Final answer
    x = 79,652.50

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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.