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Finding the Fourth Proportional to 114,307.80, 171,602.10 and 72,187.80

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Solution

The fourth proportional to 114,307.80, 171,602.10 and 72,187.80 is: 108,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,307.80 : 171,602.10 = 72,187.80 : x
  2. Step 2: Convert to fraction form
    114,307.80/171,602.10 = 72,187.80/x
  3. Step 3: Cross multiply
    114,307.80x = 171,602.10 × 72,187.80
  4. Step 4: Simplify right side
    114,307.80x = 12,387,578,074.38
  5. Step 5: Solve for x
    x = 12,387,578,074.38/114,307.80
  6. Step 6: Final answer
    x = 108,370.37

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1.5x scale

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.