Home / 91,276.08-136,602.60-76,501.68

Finding the Fourth Proportional to 91,276.08, 136,602.60 and 76,501.68

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Solution

The fourth proportional to 91,276.08, 136,602.60 and 76,501.68 is: 114,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,276.08 : 136,602.60 = 76,501.68 : x
  2. Step 2: Convert to fraction form
    91,276.08/136,602.60 = 76,501.68/x
  3. Step 3: Cross multiply
    91,276.08x = 136,602.60 × 76,501.68
  4. Step 4: Simplify right side
    91,276.08x = 10,450,328,392.37
  5. Step 5: Solve for x
    x = 10,450,328,392.37/91,276.08
  6. Step 6: Final answer
    x = 114,491.42

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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.