Home / 136,071.90-187,653.60-85,068.36

Finding the Fourth Proportional to 136,071.90, 187,653.60 and 85,068.36

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Solution

The fourth proportional to 136,071.90, 187,653.60 and 85,068.36 is: 117,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,071.90 : 187,653.60 = 85,068.36 : x
  2. Step 2: Convert to fraction form
    136,071.90/187,653.60 = 85,068.36/x
  3. Step 3: Cross multiply
    136,071.90x = 187,653.60 × 85,068.36
  4. Step 4: Simplify right side
    136,071.90x = 15,963,384,000.10
  5. Step 5: Solve for x
    x = 15,963,384,000.10/136,071.90
  6. Step 6: Final answer
    x = 117,315.80

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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.