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Finding the Fourth Proportional to 133,115.98, 183,699.34 and 72,686.66

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Solution

The fourth proportional to 133,115.98, 183,699.34 and 72,686.66 is: 100,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.98 : 183,699.34 = 72,686.66 : x
  2. Step 2: Convert to fraction form
    133,115.98/183,699.34 = 72,686.66/x
  3. Step 3: Cross multiply
    133,115.98x = 183,699.34 × 72,686.66
  4. Step 4: Simplify right side
    133,115.98x = 13,352,491,746.34
  5. Step 5: Solve for x
    x = 13,352,491,746.34/133,115.98
  6. Step 6: Final answer
    x = 100,307.21

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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.