Home / 93,077.28-128,389.05-81,169.20

Finding the Fourth Proportional to 93,077.28, 128,389.05 and 81,169.20

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Solution

The fourth proportional to 93,077.28, 128,389.05 and 81,169.20 is: 111,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,077.28 : 128,389.05 = 81,169.20 : x
  2. Step 2: Convert to fraction form
    93,077.28/128,389.05 = 81,169.20/x
  3. Step 3: Cross multiply
    93,077.28x = 128,389.05 × 81,169.20
  4. Step 4: Simplify right side
    93,077.28x = 10,421,236,477.26
  5. Step 5: Solve for x
    x = 10,421,236,477.26/93,077.28
  6. Step 6: Final answer
    x = 111,963.27

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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.