Home / 105,656.87-145,806.18-57,260.13

Finding the Fourth Proportional to 105,656.87, 145,806.18 and 57,260.13

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Solution

The fourth proportional to 105,656.87, 145,806.18 and 57,260.13 is: 79,018.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,656.87 : 145,806.18 = 57,260.13 : x
  2. Step 2: Convert to fraction form
    105,656.87/145,806.18 = 57,260.13/x
  3. Step 3: Cross multiply
    105,656.87x = 145,806.18 × 57,260.13
  4. Step 4: Simplify right side
    105,656.87x = 8,348,880,821.60
  5. Step 5: Solve for x
    x = 8,348,880,821.60/105,656.87
  6. Step 6: Final answer
    x = 79,018.82

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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.