Home / 231,173,682.36-319,034,014.38-128,157,234.36

Finding the Fourth Proportional to 231,173,682.36, 319,034,014.38 and 128,157,234.36

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Solution

The fourth proportional to 231,173,682.36, 319,034,014.38 and 128,157,234.36 is: 176,864,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,173,682.36 : 319,034,014.38 = 128,157,234.36 : x
  2. Step 2: Convert to fraction form
    231,173,682.36/319,034,014.38 = 128,157,234.36/x
  3. Step 3: Cross multiply
    231,173,682.36x = 319,034,014.38 × 128,157,234.36
  4. Step 4: Simplify right side
    231,173,682.36x = 40,886,516,949,709,272
  5. Step 5: Solve for x
    x = 40,886,516,949,709,272/231,173,682.36
  6. Step 6: Final answer
    x = 176,864,929.14

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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.