Home / 153,207.23-211,420.91-85,222.31

Finding the Fourth Proportional to 153,207.23, 211,420.91 and 85,222.31

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Solution

The fourth proportional to 153,207.23, 211,420.91 and 85,222.31 is: 117,603.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,207.23 : 211,420.91 = 85,222.31 : x
  2. Step 2: Convert to fraction form
    153,207.23/211,420.91 = 85,222.31/x
  3. Step 3: Cross multiply
    153,207.23x = 211,420.91 × 85,222.31
  4. Step 4: Simplify right side
    153,207.23x = 18,017,777,488.45
  5. Step 5: Solve for x
    x = 18,017,777,488.45/153,207.23
  6. Step 6: Final answer
    x = 117,603.97

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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.