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Finding the Fourth Proportional to 152,920.75, 211,030.64 and 85,852.75

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Solution

The fourth proportional to 152,920.75, 211,030.64 and 85,852.75 is: 118,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,920.75 : 211,030.64 = 85,852.75 : x
  2. Step 2: Convert to fraction form
    152,920.75/211,030.64 = 85,852.75/x
  3. Step 3: Cross multiply
    152,920.75x = 211,030.64 × 85,852.75
  4. Step 4: Simplify right side
    152,920.75x = 18,117,560,778.26
  5. Step 5: Solve for x
    x = 18,117,560,778.26/152,920.75
  6. Step 6: Final answer
    x = 118,476.80

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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.