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Finding the Fourth Proportional to 152,135.40, 228,203.10 and 69,029.40

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Solution

The fourth proportional to 152,135.40, 228,203.10 and 69,029.40 is: 103,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,135.40 : 228,203.10 = 69,029.40 : x
  2. Step 2: Convert to fraction form
    152,135.40/228,203.10 = 69,029.40/x
  3. Step 3: Cross multiply
    152,135.40x = 228,203.10 × 69,029.40
  4. Step 4: Simplify right side
    152,135.40x = 15,752,723,071.14
  5. Step 5: Solve for x
    x = 15,752,723,071.14/152,135.40
  6. Step 6: Final answer
    x = 103,544.10

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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.