Home / 134,740.72-185,929.44-78,146

Finding the Fourth Proportional to 134,740.72, 185,929.44 and 78,146

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Solution

The fourth proportional to 134,740.72, 185,929.44 and 78,146 is: 107,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,740.72 : 185,929.44 = 78,146 : x
  2. Step 2: Convert to fraction form
    134,740.72/185,929.44 = 78,146/x
  3. Step 3: Cross multiply
    134,740.72x = 185,929.44 × 78,146
  4. Step 4: Simplify right side
    134,740.72x = 14,529,642,018.24
  5. Step 5: Solve for x
    x = 14,529,642,018.24/134,740.72
  6. Step 6: Final answer
    x = 107,834.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.