Home / 208,278,080.70-287,453,050.62-128,918,614.62

Finding the Fourth Proportional to 208,278,080.70, 287,453,050.62 and 128,918,614.62

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Solution

The fourth proportional to 208,278,080.70, 287,453,050.62 and 128,918,614.62 is: 177,925,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278,080.70 : 287,453,050.62 = 128,918,614.62 : x
  2. Step 2: Convert to fraction form
    208,278,080.70/287,453,050.62 = 128,918,614.62/x
  3. Step 3: Cross multiply
    208,278,080.70x = 287,453,050.62 × 128,918,614.62
  4. Step 4: Simplify right side
    208,278,080.70x = 37,058,049,054,223,136
  5. Step 5: Solve for x
    x = 37,058,049,054,223,136/208,278,080.70
  6. Step 6: Final answer
    x = 177,925,823.64

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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.