Home / 143,804.16-198,501.84-87,214.32

Finding the Fourth Proportional to 143,804.16, 198,501.84 and 87,214.32

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Solution

The fourth proportional to 143,804.16, 198,501.84 and 87,214.32 is: 120,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,804.16 : 198,501.84 = 87,214.32 : x
  2. Step 2: Convert to fraction form
    143,804.16/198,501.84 = 87,214.32/x
  3. Step 3: Cross multiply
    143,804.16x = 198,501.84 × 87,214.32
  4. Step 4: Simplify right side
    143,804.16x = 17,312,202,994.35
  5. Step 5: Solve for x
    x = 17,312,202,994.35/143,804.16
  6. Step 6: Final answer
    x = 120,387.36

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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.