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Finding the Fourth Proportional to 134,880.80, 202,377.90 and 72,478.40

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Solution

The fourth proportional to 134,880.80, 202,377.90 and 72,478.40 is: 108,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,880.80 : 202,377.90 = 72,478.40 : x
  2. Step 2: Convert to fraction form
    134,880.80/202,377.90 = 72,478.40/x
  3. Step 3: Cross multiply
    134,880.80x = 202,377.90 × 72,478.40
  4. Step 4: Simplify right side
    134,880.80x = 14,668,026,387.36
  5. Step 5: Solve for x
    x = 14,668,026,387.36/134,880.80
  6. Step 6: Final answer
    x = 108,748.07

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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.