Home / 208,033,570-287,087,285.64-115,212,131.92

Finding the Fourth Proportional to 208,033,570, 287,087,285.64 and 115,212,131.92

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Solution

The fourth proportional to 208,033,570, 287,087,285.64 and 115,212,131.92 is: 158,993,273.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,033,570 : 287,087,285.64 = 115,212,131.92 : x
  2. Step 2: Convert to fraction form
    208,033,570/287,087,285.64 = 115,212,131.92/x
  3. Step 3: Cross multiply
    208,033,570x = 287,087,285.64 × 115,212,131.92
  4. Step 4: Simplify right side
    208,033,570x = 33,075,938,225,710,400
  5. Step 5: Solve for x
    x = 33,075,938,225,710,400/208,033,570
  6. Step 6: Final answer
    x = 158,993,273.18

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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.