Home / 128,904,355.18-177,890,280.06-70,168,708.54

Finding the Fourth Proportional to 128,904,355.18, 177,890,280.06 and 70,168,708.54

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Solution

The fourth proportional to 128,904,355.18, 177,890,280.06 and 70,168,708.54 is: 96,834,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904,355.18 : 177,890,280.06 = 70,168,708.54 : x
  2. Step 2: Convert to fraction form
    128,904,355.18/177,890,280.06 = 70,168,708.54/x
  3. Step 3: Cross multiply
    128,904,355.18x = 177,890,280.06 × 70,168,708.54
  4. Step 4: Simplify right side
    128,904,355.18x = 12,482,331,213,629,116
  5. Step 5: Solve for x
    x = 12,482,331,213,629,116/128,904,355.18
  6. Step 6: Final answer
    x = 96,834,053.40

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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.