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Finding the Third Proportional to 98,621 and 139,547.75

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Solution

The third proportional to 98,621 and 139,547.75 is: 197,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,621 : 139,547.75 = 139,547.75 : x
  2. Step 2: Convert to fraction form
    98,621/139,547.75 = 139,547.75/x
  3. Step 3: Cross multiply
    98,621x = 139,547.75 × 139,547.75
  4. Step 4: Simplify right side
    98,621x = 19,473,574,530.06
  5. Step 5: Solve for x
    x = 19,473,574,530.06/98,621
  6. Step 6: Final answer
    x = 197,458.70

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.