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Finding the Fourth Proportional to 136,147.86, 187,888.67 and 74,896.74

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Solution

The fourth proportional to 136,147.86, 187,888.67 and 74,896.74 is: 103,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,147.86 : 187,888.67 = 74,896.74 : x
  2. Step 2: Convert to fraction form
    136,147.86/187,888.67 = 74,896.74/x
  3. Step 3: Cross multiply
    136,147.86x = 187,888.67 × 74,896.74
  4. Step 4: Simplify right side
    136,147.86x = 14,072,248,491.45
  5. Step 5: Solve for x
    x = 14,072,248,491.45/136,147.86
  6. Step 6: Final answer
    x = 103,360.04

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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.