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Finding the Fourth Proportional to 102,498.75, 153,748.40 and 28,626.75

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Solution

The fourth proportional to 102,498.75, 153,748.40 and 28,626.75 is: 42,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,498.75 : 153,748.40 = 28,626.75 : x
  2. Step 2: Convert to fraction form
    102,498.75/153,748.40 = 28,626.75/x
  3. Step 3: Cross multiply
    102,498.75x = 153,748.40 × 28,626.75
  4. Step 4: Simplify right side
    102,498.75x = 4,401,316,866.57
  5. Step 5: Solve for x
    x = 4,401,316,866.57/102,498.75
  6. Step 6: Final answer
    x = 42,940.20

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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.