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Finding the Fourth Proportional to 96,636.80, 144,955.20 and 89,638.40

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Solution

The fourth proportional to 96,636.80, 144,955.20 and 89,638.40 is: 134,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,636.80 : 144,955.20 = 89,638.40 : x
  2. Step 2: Convert to fraction form
    96,636.80/144,955.20 = 89,638.40/x
  3. Step 3: Cross multiply
    96,636.80x = 144,955.20 × 89,638.40
  4. Step 4: Simplify right side
    96,636.80x = 12,993,552,199.68
  5. Step 5: Solve for x
    x = 12,993,552,199.68/96,636.80
  6. Step 6: Final answer
    x = 134,457.60

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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.