Home / 153,173.36-211,379.40-85,188.66

Finding the Fourth Proportional to 153,173.36, 211,379.40 and 85,188.66

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Solution

The fourth proportional to 153,173.36, 211,379.40 and 85,188.66 is: 117,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,173.36 : 211,379.40 = 85,188.66 : x
  2. Step 2: Convert to fraction form
    153,173.36/211,379.40 = 85,188.66/x
  3. Step 3: Cross multiply
    153,173.36x = 211,379.40 × 85,188.66
  4. Step 4: Simplify right side
    153,173.36x = 18,007,127,837.60
  5. Step 5: Solve for x
    x = 18,007,127,837.60/153,173.36
  6. Step 6: Final answer
    x = 117,560.45

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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.