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Finding the Fourth Proportional to 157,328.11, 235,804.74 and 90,630.07

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Solution

The fourth proportional to 157,328.11, 235,804.74 and 90,630.07 is: 135,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,328.11 : 235,804.74 = 90,630.07 : x
  2. Step 2: Convert to fraction form
    157,328.11/235,804.74 = 90,630.07/x
  3. Step 3: Cross multiply
    157,328.11x = 235,804.74 × 90,630.07
  4. Step 4: Simplify right side
    157,328.11x = 21,371,000,092.53
  5. Step 5: Solve for x
    x = 21,371,000,092.53/157,328.11
  6. Step 6: Final answer
    x = 135,837.14

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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.