Home / 153,100.40-211,288.10-85,117.91

Finding the Fourth Proportional to 153,100.40, 211,288.10 and 85,117.91

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Solution

The fourth proportional to 153,100.40, 211,288.10 and 85,117.91 is: 117,468.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,100.40 : 211,288.10 = 85,117.91 : x
  2. Step 2: Convert to fraction form
    153,100.40/211,288.10 = 85,117.91/x
  3. Step 3: Cross multiply
    153,100.40x = 211,288.10 × 85,117.91
  4. Step 4: Simplify right side
    153,100.40x = 17,984,399,997.84
  5. Step 5: Solve for x
    x = 17,984,399,997.84/153,100.40
  6. Step 6: Final answer
    x = 117,468.02

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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.