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Finding the Fourth Proportional to 152,480.75, 210,423.45 and 85,412.75

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Solution

The fourth proportional to 152,480.75, 210,423.45 and 85,412.75 is: 117,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,480.75 : 210,423.45 = 85,412.75 : x
  2. Step 2: Convert to fraction form
    152,480.75/210,423.45 = 85,412.75/x
  3. Step 3: Cross multiply
    152,480.75x = 210,423.45 × 85,412.75
  4. Step 4: Simplify right side
    152,480.75x = 17,972,845,528.99
  5. Step 5: Solve for x
    x = 17,972,845,528.99/152,480.75
  6. Step 6: Final answer
    x = 117,869.60

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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.