Home / 143,068.88-197,439.93-78,543.27

Finding the Fourth Proportional to 143,068.88, 197,439.93 and 78,543.27

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Solution

The fourth proportional to 143,068.88, 197,439.93 and 78,543.27 is: 108,392.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,068.88 : 197,439.93 = 78,543.27 : x
  2. Step 2: Convert to fraction form
    143,068.88/197,439.93 = 78,543.27/x
  3. Step 3: Cross multiply
    143,068.88x = 197,439.93 × 78,543.27
  4. Step 4: Simplify right side
    143,068.88x = 15,507,577,730.77
  5. Step 5: Solve for x
    x = 15,507,577,730.77/143,068.88
  6. Step 6: Final answer
    x = 108,392.39

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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.