Home / 208,821.36-288,156.08-118,172.64

Finding the Fourth Proportional to 208,821.36, 288,156.08 and 118,172.64

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Solution

The fourth proportional to 208,821.36, 288,156.08 and 118,172.64 is: 163,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,821.36 : 288,156.08 = 118,172.64 : x
  2. Step 2: Convert to fraction form
    208,821.36/288,156.08 = 118,172.64/x
  3. Step 3: Cross multiply
    208,821.36x = 288,156.08 × 118,172.64
  4. Step 4: Simplify right side
    208,821.36x = 34,052,164,705.65
  5. Step 5: Solve for x
    x = 34,052,164,705.65/208,821.36
  6. Step 6: Final answer
    x = 163,068.40

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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.