Home / 144,070.16-198,826.80-80,420.36

Finding the Fourth Proportional to 144,070.16, 198,826.80 and 80,420.36

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Solution

The fourth proportional to 144,070.16, 198,826.80 and 80,420.36 is: 110,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,070.16 : 198,826.80 = 80,420.36 : x
  2. Step 2: Convert to fraction form
    144,070.16/198,826.80 = 80,420.36/x
  3. Step 3: Cross multiply
    144,070.16x = 198,826.80 × 80,420.36
  4. Step 4: Simplify right side
    144,070.16x = 15,989,722,833.65
  5. Step 5: Solve for x
    x = 15,989,722,833.65/144,070.16
  6. Step 6: Final answer
    x = 110,985.67

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1.5x scale

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.