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Finding the Fourth Proportional to 109,303.40, 163,955.10 and 89,863.40

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Solution

The fourth proportional to 109,303.40, 163,955.10 and 89,863.40 is: 134,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,303.40 : 163,955.10 = 89,863.40 : x
  2. Step 2: Convert to fraction form
    109,303.40/163,955.10 = 89,863.40/x
  3. Step 3: Cross multiply
    109,303.40x = 163,955.10 × 89,863.40
  4. Step 4: Simplify right side
    109,303.40x = 14,733,562,733.34
  5. Step 5: Solve for x
    x = 14,733,562,733.34/109,303.40
  6. Step 6: Final answer
    x = 134,795.10

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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.