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Finding the Fourth Proportional to 157,078.08, 216,748.80 and 89,089.92

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Solution

The fourth proportional to 157,078.08, 216,748.80 and 89,089.92 is: 122,933.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,078.08 : 216,748.80 = 89,089.92 : x
  2. Step 2: Convert to fraction form
    157,078.08/216,748.80 = 89,089.92/x
  3. Step 3: Cross multiply
    157,078.08x = 216,748.80 × 89,089.92
  4. Step 4: Simplify right side
    157,078.08x = 19,310,133,252.10
  5. Step 5: Solve for x
    x = 19,310,133,252.10/157,078.08
  6. Step 6: Final answer
    x = 122,933.34

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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.