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Finding the Fourth Proportional to 115,980.66, 160,050.57 and 68,237.07

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Solution

The fourth proportional to 115,980.66, 160,050.57 and 68,237.07 is: 94,165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,980.66 : 160,050.57 = 68,237.07 : x
  2. Step 2: Convert to fraction form
    115,980.66/160,050.57 = 68,237.07/x
  3. Step 3: Cross multiply
    115,980.66x = 160,050.57 × 68,237.07
  4. Step 4: Simplify right side
    115,980.66x = 10,921,381,948.63
  5. Step 5: Solve for x
    x = 10,921,381,948.63/115,980.66
  6. Step 6: Final answer
    x = 94,165.54

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1.5x scale

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.