Home / 105,157.05-145,117.22-57,411.50

Finding the Fourth Proportional to 105,157.05, 145,117.22 and 57,411.50

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Solution

The fourth proportional to 105,157.05, 145,117.22 and 57,411.50 is: 79,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,157.05 : 145,117.22 = 57,411.50 : x
  2. Step 2: Convert to fraction form
    105,157.05/145,117.22 = 57,411.50/x
  3. Step 3: Cross multiply
    105,157.05x = 145,117.22 × 57,411.50
  4. Step 4: Simplify right side
    105,157.05x = 8,331,396,263.39
  5. Step 5: Solve for x
    x = 8,331,396,263.39/105,157.05
  6. Step 6: Final answer
    x = 79,228.13

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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.