Home / 142,802.39-197,069.46-78,271.11

Finding the Fourth Proportional to 142,802.39, 197,069.46 and 78,271.11

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Solution

The fourth proportional to 142,802.39, 197,069.46 and 78,271.11 is: 108,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,802.39 : 197,069.46 = 78,271.11 : x
  2. Step 2: Convert to fraction form
    142,802.39/197,069.46 = 78,271.11/x
  3. Step 3: Cross multiply
    142,802.39x = 197,069.46 × 78,271.11
  4. Step 4: Simplify right side
    142,802.39x = 15,424,845,381.30
  5. Step 5: Solve for x
    x = 15,424,845,381.30/142,802.39
  6. Step 6: Final answer
    x = 108,015.31

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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.