Home / 117,127.02-161,683.11-71,812.38

Finding the Fourth Proportional to 117,127.02, 161,683.11 and 71,812.38

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Solution

The fourth proportional to 117,127.02, 161,683.11 and 71,812.38 is: 99,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,127.02 : 161,683.11 = 71,812.38 : x
  2. Step 2: Convert to fraction form
    117,127.02/161,683.11 = 71,812.38/x
  3. Step 3: Cross multiply
    117,127.02x = 161,683.11 × 71,812.38
  4. Step 4: Simplify right side
    117,127.02x = 11,610,848,934.90
  5. Step 5: Solve for x
    x = 11,610,848,934.90/117,127.02
  6. Step 6: Final answer
    x = 99,130.41

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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.