Home / 208,999.74-288,539.34-137,587.36

Finding the Fourth Proportional to 208,999.74, 288,539.34 and 137,587.36

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Solution

The fourth proportional to 208,999.74, 288,539.34 and 137,587.36 is: 189,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,999.74 : 288,539.34 = 137,587.36 : x
  2. Step 2: Convert to fraction form
    208,999.74/288,539.34 = 137,587.36/x
  3. Step 3: Cross multiply
    208,999.74x = 288,539.34 × 137,587.36
  4. Step 4: Simplify right side
    208,999.74x = 39,699,365,737.42
  5. Step 5: Solve for x
    x = 39,699,365,737.42/208,999.74
  6. Step 6: Final answer
    x = 189,949.35

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1.5x scale

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.