Home / 93,158.25-128,590.79-55,431.69

Finding the Fourth Proportional to 93,158.25, 128,590.79 and 55,431.69

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Solution

The fourth proportional to 93,158.25, 128,590.79 and 55,431.69 is: 76,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,158.25 : 128,590.79 = 55,431.69 : x
  2. Step 2: Convert to fraction form
    93,158.25/128,590.79 = 55,431.69/x
  3. Step 3: Cross multiply
    93,158.25x = 128,590.79 × 55,431.69
  4. Step 4: Simplify right side
    93,158.25x = 7,128,004,808.14
  5. Step 5: Solve for x
    x = 7,128,004,808.14/93,158.25
  6. Step 6: Final answer
    x = 76,515.01

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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.