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Finding the Fourth Proportional to 158,406, 237,312.36 and 79,427.76

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Solution

The fourth proportional to 158,406, 237,312.36 and 79,427.76 is: 118,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,406 : 237,312.36 = 79,427.76 : x
  2. Step 2: Convert to fraction form
    158,406/237,312.36 = 79,427.76/x
  3. Step 3: Cross multiply
    158,406x = 237,312.36 × 79,427.76
  4. Step 4: Simplify right side
    158,406x = 18,849,189,175.11
  5. Step 5: Solve for x
    x = 18,849,189,175.11/158,406
  6. Step 6: Final answer
    x = 118,992.90

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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.