Home / 170,985.47-235,989.25-99,407.01

Finding the Fourth Proportional to 170,985.47, 235,989.25 and 99,407.01

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Solution

The fourth proportional to 170,985.47, 235,989.25 and 99,407.01 is: 137,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,985.47 : 235,989.25 = 99,407.01 : x
  2. Step 2: Convert to fraction form
    170,985.47/235,989.25 = 99,407.01/x
  3. Step 3: Cross multiply
    170,985.47x = 235,989.25 × 99,407.01
  4. Step 4: Simplify right side
    170,985.47x = 23,458,986,371.08
  5. Step 5: Solve for x
    x = 23,458,986,371.08/170,985.47
  6. Step 6: Final answer
    x = 137,198.72

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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.