Home / 121,285.10-181,927.65-103,570.40

Finding the Fourth Proportional to 121,285.10, 181,927.65 and 103,570.40

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Solution

The fourth proportional to 121,285.10, 181,927.65 and 103,570.40 is: 155,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,285.10 : 181,927.65 = 103,570.40 : x
  2. Step 2: Convert to fraction form
    121,285.10/181,927.65 = 103,570.40/x
  3. Step 3: Cross multiply
    121,285.10x = 181,927.65 × 103,570.40
  4. Step 4: Simplify right side
    121,285.10x = 18,842,319,481.56
  5. Step 5: Solve for x
    x = 18,842,319,481.56/121,285.10
  6. Step 6: Final answer
    x = 155,355.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.