Home / 151,476.84-209,013.36-87,802.20

Finding the Fourth Proportional to 151,476.84, 209,013.36 and 87,802.20

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Solution

The fourth proportional to 151,476.84, 209,013.36 and 87,802.20 is: 121,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,476.84 : 209,013.36 = 87,802.20 : x
  2. Step 2: Convert to fraction form
    151,476.84/209,013.36 = 87,802.20/x
  3. Step 3: Cross multiply
    151,476.84x = 209,013.36 × 87,802.20
  4. Step 4: Simplify right side
    151,476.84x = 18,351,832,837.39
  5. Step 5: Solve for x
    x = 18,351,832,837.39/151,476.84
  6. Step 6: Final answer
    x = 121,152.73

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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.