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Finding the Fourth Proportional to 133,085.63, 183,660.95 and 72,658.82

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Solution

The fourth proportional to 133,085.63, 183,660.95 and 72,658.82 is: 100,270.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,085.63 : 183,660.95 = 72,658.82 : x
  2. Step 2: Convert to fraction form
    133,085.63/183,660.95 = 72,658.82/x
  3. Step 3: Cross multiply
    133,085.63x = 183,660.95 × 72,658.82
  4. Step 4: Simplify right side
    133,085.63x = 13,344,588,547.88
  5. Step 5: Solve for x
    x = 13,344,588,547.88/133,085.63
  6. Step 6: Final answer
    x = 100,270.69

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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.