Home / 105,716.40-145,888.56-57,970.52

Finding the Fourth Proportional to 105,716.40, 145,888.56 and 57,970.52

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Solution

The fourth proportional to 105,716.40, 145,888.56 and 57,970.52 is: 79,999.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,716.40 : 145,888.56 = 57,970.52 : x
  2. Step 2: Convert to fraction form
    105,716.40/145,888.56 = 57,970.52/x
  3. Step 3: Cross multiply
    105,716.40x = 145,888.56 × 57,970.52
  4. Step 4: Simplify right side
    105,716.40x = 8,457,235,685.25
  5. Step 5: Solve for x
    x = 8,457,235,685.25/105,716.40
  6. Step 6: Final answer
    x = 79,999.28

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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.