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Finding the Fourth Proportional to 161,988.93, 223,544.07 and 90,368.91

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Solution

The fourth proportional to 161,988.93, 223,544.07 and 90,368.91 is: 124,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,988.93 : 223,544.07 = 90,368.91 : x
  2. Step 2: Convert to fraction form
    161,988.93/223,544.07 = 90,368.91/x
  3. Step 3: Cross multiply
    161,988.93x = 223,544.07 × 90,368.91
  4. Step 4: Simplify right side
    161,988.93x = 20,201,433,942.86
  5. Step 5: Solve for x
    x = 20,201,433,942.86/161,988.93
  6. Step 6: Final answer
    x = 124,708.73

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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.