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Finding the Fourth Proportional to 157,045.41, 216,728.34 and 89,990.37

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Solution

The fourth proportional to 157,045.41, 216,728.34 and 89,990.37 is: 124,189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,045.41 : 216,728.34 = 89,990.37 : x
  2. Step 2: Convert to fraction form
    157,045.41/216,728.34 = 89,990.37/x
  3. Step 3: Cross multiply
    157,045.41x = 216,728.34 × 89,990.37
  4. Step 4: Simplify right side
    157,045.41x = 19,503,463,506.09
  5. Step 5: Solve for x
    x = 19,503,463,506.09/157,045.41
  6. Step 6: Final answer
    x = 124,189.96

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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.