Home / 2,112,342.80-3,168,125.40-1,312,192.40

Finding the Fourth Proportional to 2,112,342.80, 3,168,125.40 and 1,312,192.40

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Solution

The fourth proportional to 2,112,342.80, 3,168,125.40 and 1,312,192.40 is: 1,968,047.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112,342.80 : 3,168,125.40 = 1,312,192.40 : x
  2. Step 2: Convert to fraction form
    2,112,342.80/3,168,125.40 = 1,312,192.40/x
  3. Step 3: Cross multiply
    2,112,342.80x = 3,168,125.40 × 1,312,192.40
  4. Step 4: Simplify right side
    2,112,342.80x = 4,157,190,072,126.96
  5. Step 5: Solve for x
    x = 4,157,190,072,126.96/2,112,342.80
  6. Step 6: Final answer
    x = 1,968,047.08

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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.