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Finding the Fourth Proportional to 157,021.47, 216,710.64 and 89,063.08

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Solution

The fourth proportional to 157,021.47, 216,710.64 and 89,063.08 is: 122,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,021.47 : 216,710.64 = 89,063.08 : x
  2. Step 2: Convert to fraction form
    157,021.47/216,710.64 = 89,063.08/x
  3. Step 3: Cross multiply
    157,021.47x = 216,710.64 × 89,063.08
  4. Step 4: Simplify right side
    157,021.47x = 19,300,916,525.39
  5. Step 5: Solve for x
    x = 19,300,916,525.39/157,021.47
  6. Step 6: Final answer
    x = 122,918.96

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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.