Home / 103,407.09-142,698.02-63,188.16

Finding the Fourth Proportional to 103,407.09, 142,698.02 and 63,188.16

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Solution

The fourth proportional to 103,407.09, 142,698.02 and 63,188.16 is: 87,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,407.09 : 142,698.02 = 63,188.16 : x
  2. Step 2: Convert to fraction form
    103,407.09/142,698.02 = 63,188.16/x
  3. Step 3: Cross multiply
    103,407.09x = 142,698.02 × 63,188.16
  4. Step 4: Simplify right side
    103,407.09x = 9,016,825,003.50
  5. Step 5: Solve for x
    x = 9,016,825,003.50/103,407.09
  6. Step 6: Final answer
    x = 87,197.36

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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.