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Finding the Fourth Proportional to 104,802.88, 144,382.08 and 72,916.96

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Solution

The fourth proportional to 104,802.88, 144,382.08 and 72,916.96 is: 100,454.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,802.88 : 144,382.08 = 72,916.96 : x
  2. Step 2: Convert to fraction form
    104,802.88/144,382.08 = 72,916.96/x
  3. Step 3: Cross multiply
    104,802.88x = 144,382.08 × 72,916.96
  4. Step 4: Simplify right side
    104,802.88x = 10,527,902,352.08
  5. Step 5: Solve for x
    x = 10,527,902,352.08/104,802.88
  6. Step 6: Final answer
    x = 100,454.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.