Home / 153,290.60-211,542.44-85,310.45

Finding the Fourth Proportional to 153,290.60, 211,542.44 and 85,310.45

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Solution

The fourth proportional to 153,290.60, 211,542.44 and 85,310.45 is: 117,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,290.60 : 211,542.44 = 85,310.45 : x
  2. Step 2: Convert to fraction form
    153,290.60/211,542.44 = 85,310.45/x
  3. Step 3: Cross multiply
    153,290.60x = 211,542.44 × 85,310.45
  4. Step 4: Simplify right side
    153,290.60x = 18,046,779,266.23
  5. Step 5: Solve for x
    x = 18,046,779,266.23/153,290.60
  6. Step 6: Final answer
    x = 117,729.20

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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.