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Finding the Fourth Proportional to 158,111.76, 237,002.40 and 69,290.40

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Solution

The fourth proportional to 158,111.76, 237,002.40 and 69,290.40 is: 103,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,111.76 : 237,002.40 = 69,290.40 : x
  2. Step 2: Convert to fraction form
    158,111.76/237,002.40 = 69,290.40/x
  3. Step 3: Cross multiply
    158,111.76x = 237,002.40 × 69,290.40
  4. Step 4: Simplify right side
    158,111.76x = 16,421,991,096.96
  5. Step 5: Solve for x
    x = 16,421,991,096.96/158,111.76
  6. Step 6: Final answer
    x = 103,863.19

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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.