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Finding the Fourth Proportional to 157,139.96, 216,875.48 and 89,173.68

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Solution

The fourth proportional to 157,139.96, 216,875.48 and 89,173.68 is: 123,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,139.96 : 216,875.48 = 89,173.68 : x
  2. Step 2: Convert to fraction form
    157,139.96/216,875.48 = 89,173.68/x
  3. Step 3: Cross multiply
    157,139.96x = 216,875.48 × 89,173.68
  4. Step 4: Simplify right side
    157,139.96x = 19,339,584,653.37
  5. Step 5: Solve for x
    x = 19,339,584,653.37/157,139.96
  6. Step 6: Final answer
    x = 123,072.35

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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.