Home / 153,636.03-212,018.57-85,657.25

Finding the Fourth Proportional to 153,636.03, 212,018.57 and 85,657.25

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Solution

The fourth proportional to 153,636.03, 212,018.57 and 85,657.25 is: 118,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,636.03 : 212,018.57 = 85,657.25 : x
  2. Step 2: Convert to fraction form
    153,636.03/212,018.57 = 85,657.25/x
  3. Step 3: Cross multiply
    153,636.03x = 212,018.57 × 85,657.25
  4. Step 4: Simplify right side
    153,636.03x = 18,160,926,166.75
  5. Step 5: Solve for x
    x = 18,160,926,166.75/153,636.03
  6. Step 6: Final answer
    x = 118,207.47

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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.