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Finding the Fourth Proportional to 152,923.75, 211,034.78 and 85,855.75

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Solution

The fourth proportional to 152,923.75, 211,034.78 and 85,855.75 is: 118,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,923.75 : 211,034.78 = 85,855.75 : x
  2. Step 2: Convert to fraction form
    152,923.75/211,034.78 = 85,855.75/x
  3. Step 3: Cross multiply
    152,923.75x = 211,034.78 × 85,855.75
  4. Step 4: Simplify right side
    152,923.75x = 18,118,549,312.99
  5. Step 5: Solve for x
    x = 18,118,549,312.99/152,923.75
  6. Step 6: Final answer
    x = 118,480.94

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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.