Home / 139,748.12-192,855.84-76,089.40

Finding the Fourth Proportional to 139,748.12, 192,855.84 and 76,089.40

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Solution

The fourth proportional to 139,748.12, 192,855.84 and 76,089.40 is: 105,005.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,748.12 : 192,855.84 = 76,089.40 : x
  2. Step 2: Convert to fraction form
    139,748.12/192,855.84 = 76,089.40/x
  3. Step 3: Cross multiply
    139,748.12x = 192,855.84 × 76,089.40
  4. Step 4: Simplify right side
    139,748.12x = 14,674,285,152.10
  5. Step 5: Solve for x
    x = 14,674,285,152.10/139,748.12
  6. Step 6: Final answer
    x = 105,005.24

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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.