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Finding the Fourth Proportional to 187,888.40, 281,762.63 and 75,530.80

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Solution

The fourth proportional to 187,888.40, 281,762.63 and 75,530.80 is: 113,268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,888.40 : 281,762.63 = 75,530.80 : x
  2. Step 2: Convert to fraction form
    187,888.40/281,762.63 = 75,530.80/x
  3. Step 3: Cross multiply
    187,888.40x = 281,762.63 × 75,530.80
  4. Step 4: Simplify right side
    187,888.40x = 21,281,756,854.00
  5. Step 5: Solve for x
    x = 21,281,756,854.00/187,888.40
  6. Step 6: Final answer
    x = 113,268.07

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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.