Home / 208,009,712.80-312,014,569.20-105,973,040.80

Finding the Fourth Proportional to 208,009,712.80, 312,014,569.20 and 105,973,040.80

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Solution

The fourth proportional to 208,009,712.80, 312,014,569.20 and 105,973,040.80 is: 158,959,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,712.80 : 312,014,569.20 = 105,973,040.80 : x
  2. Step 2: Convert to fraction form
    208,009,712.80/312,014,569.20 = 105,973,040.80/x
  3. Step 3: Cross multiply
    208,009,712.80x = 312,014,569.20 × 105,973,040.80
  4. Step 4: Simplify right side
    208,009,712.80x = 33,065,132,672,026,020
  5. Step 5: Solve for x
    x = 33,065,132,672,026,020/208,009,712.80
  6. Step 6: Final answer
    x = 158,959,561.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.