Home / 231,173,712.36-319,034,055.78-128,157,264.36

Finding the Fourth Proportional to 231,173,712.36, 319,034,055.78 and 128,157,264.36

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Solution

The fourth proportional to 231,173,712.36, 319,034,055.78 and 128,157,264.36 is: 176,864,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,173,712.36 : 319,034,055.78 = 128,157,264.36 : x
  2. Step 2: Convert to fraction form
    231,173,712.36/319,034,055.78 = 128,157,264.36/x
  3. Step 3: Cross multiply
    231,173,712.36x = 319,034,055.78 × 128,157,264.36
  4. Step 4: Simplify right side
    231,173,712.36x = 40,886,531,826,440,440
  5. Step 5: Solve for x
    x = 40,886,531,826,440,440/231,173,712.36
  6. Step 6: Final answer
    x = 176,864,970.54

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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.