Home / 105,636.52-145,780.26-72,113.32

Finding the Fourth Proportional to 105,636.52, 145,780.26 and 72,113.32

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Solution

The fourth proportional to 105,636.52, 145,780.26 and 72,113.32 is: 99,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,636.52 : 145,780.26 = 72,113.32 : x
  2. Step 2: Convert to fraction form
    105,636.52/145,780.26 = 72,113.32/x
  3. Step 3: Cross multiply
    105,636.52x = 145,780.26 × 72,113.32
  4. Step 4: Simplify right side
    105,636.52x = 10,512,698,539.06
  5. Step 5: Solve for x
    x = 10,512,698,539.06/105,636.52
  6. Step 6: Final answer
    x = 99,517.65

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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.