Home / 128,177.64-176,801.94-80,389.26

Finding the Fourth Proportional to 128,177.64, 176,801.94 and 80,389.26

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Solution

The fourth proportional to 128,177.64, 176,801.94 and 80,389.26 is: 110,885.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,177.64 : 176,801.94 = 80,389.26 : x
  2. Step 2: Convert to fraction form
    128,177.64/176,801.94 = 80,389.26/x
  3. Step 3: Cross multiply
    128,177.64x = 176,801.94 × 80,389.26
  4. Step 4: Simplify right side
    128,177.64x = 14,212,977,123.16
  5. Step 5: Solve for x
    x = 14,212,977,123.16/128,177.64
  6. Step 6: Final answer
    x = 110,885.00

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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.