Home / 107,787.04-161,483.52-78,131.32

Finding the Fourth Proportional to 107,787.04, 161,483.52 and 78,131.32

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Solution

The fourth proportional to 107,787.04, 161,483.52 and 78,131.32 is: 117,054.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,787.04 : 161,483.52 = 78,131.32 : x
  2. Step 2: Convert to fraction form
    107,787.04/161,483.52 = 78,131.32/x
  3. Step 3: Cross multiply
    107,787.04x = 161,483.52 × 78,131.32
  4. Step 4: Simplify right side
    107,787.04x = 12,616,920,465.13
  5. Step 5: Solve for x
    x = 12,616,920,465.13/107,787.04
  6. Step 6: Final answer
    x = 117,054.15

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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.