Home / 209,153.51-313,510.96-102,390.25

Finding the Fourth Proportional to 209,153.51, 313,510.96 and 102,390.25

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Solution

The fourth proportional to 209,153.51, 313,510.96 and 102,390.25 is: 153,478.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,153.51 : 313,510.96 = 102,390.25 : x
  2. Step 2: Convert to fraction form
    209,153.51/313,510.96 = 102,390.25/x
  3. Step 3: Cross multiply
    209,153.51x = 313,510.96 × 102,390.25
  4. Step 4: Simplify right side
    209,153.51x = 32,100,464,916.35
  5. Step 5: Solve for x
    x = 32,100,464,916.35/209,153.51
  6. Step 6: Final answer
    x = 153,478.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.