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Finding the Fourth Proportional to 101,172.96, 151,009.14 and 87,603.57

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Solution

The fourth proportional to 101,172.96, 151,009.14 and 87,603.57 is: 130,755.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,172.96 : 151,009.14 = 87,603.57 : x
  2. Step 2: Convert to fraction form
    101,172.96/151,009.14 = 87,603.57/x
  3. Step 3: Cross multiply
    101,172.96x = 151,009.14 × 87,603.57
  4. Step 4: Simplify right side
    101,172.96x = 13,228,939,766.63
  5. Step 5: Solve for x
    x = 13,228,939,766.63/101,172.96
  6. Step 6: Final answer
    x = 130,755.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.