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Finding the Fourth Proportional to 144,482.10, 199,464.03 and 87,131.67

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Solution

The fourth proportional to 144,482.10, 199,464.03 and 87,131.67 is: 120,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,482.10 : 199,464.03 = 87,131.67 : x
  2. Step 2: Convert to fraction form
    144,482.10/199,464.03 = 87,131.67/x
  3. Step 3: Cross multiply
    144,482.10x = 199,464.03 × 87,131.67
  4. Step 4: Simplify right side
    144,482.10x = 17,379,634,038.83
  5. Step 5: Solve for x
    x = 17,379,634,038.83/144,482.10
  6. Step 6: Final answer
    x = 120,289.18

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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.