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Finding the Fourth Proportional to 102,885.60, 154,328.40 and 60,722.40

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Solution

The fourth proportional to 102,885.60, 154,328.40 and 60,722.40 is: 91,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885.60 : 154,328.40 = 60,722.40 : x
  2. Step 2: Convert to fraction form
    102,885.60/154,328.40 = 60,722.40/x
  3. Step 3: Cross multiply
    102,885.60x = 154,328.40 × 60,722.40
  4. Step 4: Simplify right side
    102,885.60x = 9,371,190,836.16
  5. Step 5: Solve for x
    x = 9,371,190,836.16/102,885.60
  6. Step 6: Final answer
    x = 91,083.60

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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.