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Finding the Fourth Proportional to 105,222.40, 145,210.40 and 57,480.20

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Solution

The fourth proportional to 105,222.40, 145,210.40 and 57,480.20 is: 79,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,222.40 : 145,210.40 = 57,480.20 : x
  2. Step 2: Convert to fraction form
    105,222.40/145,210.40 = 57,480.20/x
  3. Step 3: Cross multiply
    105,222.40x = 145,210.40 × 57,480.20
  4. Step 4: Simplify right side
    105,222.40x = 8,346,722,834.08
  5. Step 5: Solve for x
    x = 8,346,722,834.08/105,222.40
  6. Step 6: Final answer
    x = 79,324.58

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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.