Home / 153,837.60-212,306.54-85,867.80

Finding the Fourth Proportional to 153,837.60, 212,306.54 and 85,867.80

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Solution

The fourth proportional to 153,837.60, 212,306.54 and 85,867.80 is: 118,503.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,837.60 : 212,306.54 = 85,867.80 : x
  2. Step 2: Convert to fraction form
    153,837.60/212,306.54 = 85,867.80/x
  3. Step 3: Cross multiply
    153,837.60x = 212,306.54 × 85,867.80
  4. Step 4: Simplify right side
    153,837.60x = 18,230,295,515.41
  5. Step 5: Solve for x
    x = 18,230,295,515.41/153,837.60
  6. Step 6: Final answer
    x = 118,503.51

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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.