Home / 128,928.10-178,325.13-114,024.10

Finding the Fourth Proportional to 128,928.10, 178,325.13 and 114,024.10

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Solution

The fourth proportional to 128,928.10, 178,325.13 and 114,024.10 is: 157,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,928.10 : 178,325.13 = 114,024.10 : x
  2. Step 2: Convert to fraction form
    128,928.10/178,325.13 = 114,024.10/x
  3. Step 3: Cross multiply
    128,928.10x = 178,325.13 × 114,024.10
  4. Step 4: Simplify right side
    128,928.10x = 20,333,362,455.63
  5. Step 5: Solve for x
    x = 20,333,362,455.63/128,928.10
  6. Step 6: Final answer
    x = 157,710.87

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1.5x scale

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.