Home / 102,386.52-141,172.56-70,136.64

Finding the Fourth Proportional to 102,386.52, 141,172.56 and 70,136.64

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Solution

The fourth proportional to 102,386.52, 141,172.56 and 70,136.64 is: 96,705.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,386.52 : 141,172.56 = 70,136.64 : x
  2. Step 2: Convert to fraction form
    102,386.52/141,172.56 = 70,136.64/x
  3. Step 3: Cross multiply
    102,386.52x = 141,172.56 × 70,136.64
  4. Step 4: Simplify right side
    102,386.52x = 9,901,369,018.60
  5. Step 5: Solve for x
    x = 9,901,369,018.60/102,386.52
  6. Step 6: Final answer
    x = 96,705.79

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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.