Home / 191,103.12-286,556.38-85,831.76

Finding the Fourth Proportional to 191,103.12, 286,556.38 and 85,831.76

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Solution

The fourth proportional to 191,103.12, 286,556.38 and 85,831.76 is: 128,703.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,103.12 : 286,556.38 = 85,831.76 : x
  2. Step 2: Convert to fraction form
    191,103.12/286,556.38 = 85,831.76/x
  3. Step 3: Cross multiply
    191,103.12x = 286,556.38 × 85,831.76
  4. Step 4: Simplify right side
    191,103.12x = 24,595,638,434.63
  5. Step 5: Solve for x
    x = 24,595,638,434.63/191,103.12
  6. Step 6: Final answer
    x = 128,703.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.