Home / 128,899,153.80-177,885,525.06-70,158,979.26

Finding the Fourth Proportional to 128,899,153.80, 177,885,525.06 and 70,158,979.26

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Solution

The fourth proportional to 128,899,153.80, 177,885,525.06 and 70,158,979.26 is: 96,821,945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899,153.80 : 177,885,525.06 = 70,158,979.26 : x
  2. Step 2: Convert to fraction form
    128,899,153.80/177,885,525.06 = 70,158,979.26/x
  3. Step 3: Cross multiply
    128,899,153.80x = 177,885,525.06 × 70,158,979.26
  4. Step 4: Simplify right side
    128,899,153.80x = 12,480,266,863,338,752
  5. Step 5: Solve for x
    x = 12,480,266,863,338,752/128,899,153.80
  6. Step 6: Final answer
    x = 96,821,945.65

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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.