Home / 208,539,619.45-287,798,126.95-115,720,127.30

Finding the Fourth Proportional to 208,539,619.45, 287,798,126.95 and 115,720,127.30

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Solution

The fourth proportional to 208,539,619.45, 287,798,126.95 and 115,720,127.30 is: 159,701,240.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,539,619.45 : 287,798,126.95 = 115,720,127.30 : x
  2. Step 2: Convert to fraction form
    208,539,619.45/287,798,126.95 = 115,720,127.30/x
  3. Step 3: Cross multiply
    208,539,619.45x = 287,798,126.95 × 115,720,127.30
  4. Step 4: Simplify right side
    208,539,619.45x = 33,304,035,885,947,896
  5. Step 5: Solve for x
    x = 33,304,035,885,947,896/208,539,619.45
  6. Step 6: Final answer
    x = 159,701,240.34

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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.