Home / 134,941.78-186,236.08-78,353.16

Finding the Fourth Proportional to 134,941.78, 186,236.08 and 78,353.16

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Solution

The fourth proportional to 134,941.78, 186,236.08 and 78,353.16 is: 108,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,941.78 : 186,236.08 = 78,353.16 : x
  2. Step 2: Convert to fraction form
    134,941.78/186,236.08 = 78,353.16/x
  3. Step 3: Cross multiply
    134,941.78x = 186,236.08 × 78,353.16
  4. Step 4: Simplify right side
    134,941.78x = 14,592,184,479.74
  5. Step 5: Solve for x
    x = 14,592,184,479.74/134,941.78
  6. Step 6: Final answer
    x = 108,136.89

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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.