Home / 139,507.51-192,178.69-101,154.36

Finding the Fourth Proportional to 139,507.51, 192,178.69 and 101,154.36

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Solution

The fourth proportional to 139,507.51, 192,178.69 and 101,154.36 is: 139,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,507.51 : 192,178.69 = 101,154.36 : x
  2. Step 2: Convert to fraction form
    139,507.51/192,178.69 = 101,154.36/x
  3. Step 3: Cross multiply
    139,507.51x = 192,178.69 × 101,154.36
  4. Step 4: Simplify right side
    139,507.51x = 19,439,711,431.70
  5. Step 5: Solve for x
    x = 19,439,711,431.70/139,507.51
  6. Step 6: Final answer
    x = 139,345.27

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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.