Home / 153,636.25-212,018.94-85,657.51

Finding the Fourth Proportional to 153,636.25, 212,018.94 and 85,657.51

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Solution

The fourth proportional to 153,636.25, 212,018.94 and 85,657.51 is: 118,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,636.25 : 212,018.94 = 85,657.51 : x
  2. Step 2: Convert to fraction form
    153,636.25/212,018.94 = 85,657.51/x
  3. Step 3: Cross multiply
    153,636.25x = 212,018.94 × 85,657.51
  4. Step 4: Simplify right side
    153,636.25x = 18,161,014,473.24
  5. Step 5: Solve for x
    x = 18,161,014,473.24/153,636.25
  6. Step 6: Final answer
    x = 118,207.87

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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.