Home / 128,904,356.18-177,890,281.44-70,168,709.54

Finding the Fourth Proportional to 128,904,356.18, 177,890,281.44 and 70,168,709.54

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Solution

The fourth proportional to 128,904,356.18, 177,890,281.44 and 70,168,709.54 is: 96,834,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904,356.18 : 177,890,281.44 = 70,168,709.54 : x
  2. Step 2: Convert to fraction form
    128,904,356.18/177,890,281.44 = 70,168,709.54/x
  3. Step 3: Cross multiply
    128,904,356.18x = 177,890,281.44 × 70,168,709.54
  4. Step 4: Simplify right side
    128,904,356.18x = 12,482,331,488,352,214
  5. Step 5: Solve for x
    x = 12,482,331,488,352,214/128,904,356.18
  6. Step 6: Final answer
    x = 96,834,054.78

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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.