Home / 153,188.69-211,397.36-85,204.20

Finding the Fourth Proportional to 153,188.69, 211,397.36 and 85,204.20

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Solution

The fourth proportional to 153,188.69, 211,397.36 and 85,204.20 is: 117,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,188.69 : 211,397.36 = 85,204.20 : x
  2. Step 2: Convert to fraction form
    153,188.69/211,397.36 = 85,204.20/x
  3. Step 3: Cross multiply
    153,188.69x = 211,397.36 × 85,204.20
  4. Step 4: Simplify right side
    153,188.69x = 18,011,942,940.91
  5. Step 5: Solve for x
    x = 18,011,942,940.91/153,188.69
  6. Step 6: Final answer
    x = 117,580.11

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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.