Home / 128,618,852.31-177,495,630.44-69,882,498.32

Finding the Fourth Proportional to 128,618,852.31, 177,495,630.44 and 69,882,498.32

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Solution

The fourth proportional to 128,618,852.31, 177,495,630.44 and 69,882,498.32 is: 96,438,724.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,618,852.31 : 177,495,630.44 = 69,882,498.32 : x
  2. Step 2: Convert to fraction form
    128,618,852.31/177,495,630.44 = 69,882,498.32/x
  3. Step 3: Cross multiply
    128,618,852.31x = 177,495,630.44 × 69,882,498.32
  4. Step 4: Simplify right side
    128,618,852.31x = 12,403,838,094,793,750
  5. Step 5: Solve for x
    x = 12,403,838,094,793,750/128,618,852.31
  6. Step 6: Final answer
    x = 96,438,724.74

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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.