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Finding the Fourth Proportional to 153,321.42, 211,615.02 and 89,674.86

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Solution

The fourth proportional to 153,321.42, 211,615.02 and 89,674.86 is: 123,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,321.42 : 211,615.02 = 89,674.86 : x
  2. Step 2: Convert to fraction form
    153,321.42/211,615.02 = 89,674.86/x
  3. Step 3: Cross multiply
    153,321.42x = 211,615.02 × 89,674.86
  4. Step 4: Simplify right side
    153,321.42x = 18,976,547,292.40
  5. Step 5: Solve for x
    x = 18,976,547,292.40/153,321.42
  6. Step 6: Final answer
    x = 123,769.71

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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.