Home / 128,618,842.50-177,495,616.95-69,882,488.52

Finding the Fourth Proportional to 128,618,842.50, 177,495,616.95 and 69,882,488.52

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Solution

The fourth proportional to 128,618,842.50, 177,495,616.95 and 69,882,488.52 is: 96,438,711.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,618,842.50 : 177,495,616.95 = 69,882,488.52 : x
  2. Step 2: Convert to fraction form
    128,618,842.50/177,495,616.95 = 69,882,488.52/x
  3. Step 3: Cross multiply
    128,618,842.50x = 177,495,616.95 × 69,882,488.52
  4. Step 4: Simplify right side
    128,618,842.50x = 12,403,835,413,858,690
  5. Step 5: Solve for x
    x = 12,403,835,413,858,690/128,618,842.50
  6. Step 6: Final answer
    x = 96,438,711.26

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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.