Home / 199,845.22-275,655.81-128,111.62

Finding the Fourth Proportional to 199,845.22, 275,655.81 and 128,111.62

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Solution

The fourth proportional to 199,845.22, 275,655.81 and 128,111.62 is: 176,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,845.22 : 275,655.81 = 128,111.62 : x
  2. Step 2: Convert to fraction form
    199,845.22/275,655.81 = 128,111.62/x
  3. Step 3: Cross multiply
    199,845.22x = 275,655.81 × 128,111.62
  4. Step 4: Simplify right side
    199,845.22x = 35,314,712,381.51
  5. Step 5: Solve for x
    x = 35,314,712,381.51/199,845.22
  6. Step 6: Final answer
    x = 176,710.32

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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.