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Finding the Fourth Proportional to 128,572.02, 192,687.93 and 93,152.34

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Solution

The fourth proportional to 128,572.02, 192,687.93 and 93,152.34 is: 139,605.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,572.02 : 192,687.93 = 93,152.34 : x
  2. Step 2: Convert to fraction form
    128,572.02/192,687.93 = 93,152.34/x
  3. Step 3: Cross multiply
    128,572.02x = 192,687.93 × 93,152.34
  4. Step 4: Simplify right side
    128,572.02x = 17,949,331,569.26
  5. Step 5: Solve for x
    x = 17,949,331,569.26/128,572.02
  6. Step 6: Final answer
    x = 139,605.27

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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.