Home / 147,085.74-202,971.96-81,670.55

Finding the Fourth Proportional to 147,085.74, 202,971.96 and 81,670.55

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Solution

The fourth proportional to 147,085.74, 202,971.96 and 81,670.55 is: 112,701.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,085.74 : 202,971.96 = 81,670.55 : x
  2. Step 2: Convert to fraction form
    147,085.74/202,971.96 = 81,670.55/x
  3. Step 3: Cross multiply
    147,085.74x = 202,971.96 × 81,670.55
  4. Step 4: Simplify right side
    147,085.74x = 16,576,830,592.92
  5. Step 5: Solve for x
    x = 16,576,830,592.92/147,085.74
  6. Step 6: Final answer
    x = 112,701.82

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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.