Home / 139,383.19-192,349.58-85,703.28

Finding the Fourth Proportional to 139,383.19, 192,349.58 and 85,703.28

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Solution

The fourth proportional to 139,383.19, 192,349.58 and 85,703.28 is: 118,271.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,383.19 : 192,349.58 = 85,703.28 : x
  2. Step 2: Convert to fraction form
    139,383.19/192,349.58 = 85,703.28/x
  3. Step 3: Cross multiply
    139,383.19x = 192,349.58 × 85,703.28
  4. Step 4: Simplify right side
    139,383.19x = 16,484,988,762.80
  5. Step 5: Solve for x
    x = 16,484,988,762.80/139,383.19
  6. Step 6: Final answer
    x = 118,271.00

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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.