Home / 128,247.03-176,977.26-71,658.39

Finding the Fourth Proportional to 128,247.03, 176,977.26 and 71,658.39

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Solution

The fourth proportional to 128,247.03, 176,977.26 and 71,658.39 is: 98,886.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.03 : 176,977.26 = 71,658.39 : x
  2. Step 2: Convert to fraction form
    128,247.03/176,977.26 = 71,658.39/x
  3. Step 3: Cross multiply
    128,247.03x = 176,977.26 × 71,658.39
  4. Step 4: Simplify right side
    128,247.03x = 12,681,905,518.21
  5. Step 5: Solve for x
    x = 12,681,905,518.21/128,247.03
  6. Step 6: Final answer
    x = 98,886.54

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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.