Home / 149,776.16-206,683.36-81,780.01

Finding the Fourth Proportional to 149,776.16, 206,683.36 and 81,780.01

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Solution

The fourth proportional to 149,776.16, 206,683.36 and 81,780.01 is: 112,852.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,776.16 : 206,683.36 = 81,780.01 : x
  2. Step 2: Convert to fraction form
    149,776.16/206,683.36 = 81,780.01/x
  3. Step 3: Cross multiply
    149,776.16x = 206,683.36 × 81,780.01
  4. Step 4: Simplify right side
    149,776.16x = 16,902,566,526.48
  5. Step 5: Solve for x
    x = 16,902,566,526.48/149,776.16
  6. Step 6: Final answer
    x = 112,852.19

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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.