Home / 103,835.40-143,287.02-61,407.60

Finding the Fourth Proportional to 103,835.40, 143,287.02 and 61,407.60

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Solution

The fourth proportional to 103,835.40, 143,287.02 and 61,407.60 is: 84,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,835.40 : 143,287.02 = 61,407.60 : x
  2. Step 2: Convert to fraction form
    103,835.40/143,287.02 = 61,407.60/x
  3. Step 3: Cross multiply
    103,835.40x = 143,287.02 × 61,407.60
  4. Step 4: Simplify right side
    103,835.40x = 8,798,912,009.35
  5. Step 5: Solve for x
    x = 8,798,912,009.35/103,835.40
  6. Step 6: Final answer
    x = 84,739.04

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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.