Home / 161,619.60-242,346.41-86,802.71

Finding the Fourth Proportional to 161,619.60, 242,346.41 and 86,802.71

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Solution

The fourth proportional to 161,619.60, 242,346.41 and 86,802.71 is: 130,159.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,619.60 : 242,346.41 = 86,802.71 : x
  2. Step 2: Convert to fraction form
    161,619.60/242,346.41 = 86,802.71/x
  3. Step 3: Cross multiply
    161,619.60x = 242,346.41 × 86,802.71
  4. Step 4: Simplify right side
    161,619.60x = 21,036,325,627.20
  5. Step 5: Solve for x
    x = 21,036,325,627.20/161,619.60
  6. Step 6: Final answer
    x = 130,159.49

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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.