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Finding the Fourth Proportional to 140,728.59, 211,132.37 and 56,547.87

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Solution

The fourth proportional to 140,728.59, 211,132.37 and 56,547.87 is: 84,837.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,728.59 : 211,132.37 = 56,547.87 : x
  2. Step 2: Convert to fraction form
    140,728.59/211,132.37 = 56,547.87/x
  3. Step 3: Cross multiply
    140,728.59x = 211,132.37 × 56,547.87
  4. Step 4: Simplify right side
    140,728.59x = 11,939,086,348.79
  5. Step 5: Solve for x
    x = 11,939,086,348.79/140,728.59
  6. Step 6: Final answer
    x = 84,837.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.