Home / 103,228.22-142,347.77-72,999.74

Finding the Fourth Proportional to 103,228.22, 142,347.77 and 72,999.74

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Solution

The fourth proportional to 103,228.22, 142,347.77 and 72,999.74 is: 100,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,228.22 : 142,347.77 = 72,999.74 : x
  2. Step 2: Convert to fraction form
    103,228.22/142,347.77 = 72,999.74/x
  3. Step 3: Cross multiply
    103,228.22x = 142,347.77 × 72,999.74
  4. Step 4: Simplify right side
    103,228.22x = 10,391,350,199.58
  5. Step 5: Solve for x
    x = 10,391,350,199.58/103,228.22
  6. Step 6: Final answer
    x = 100,663.85

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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.