Home / 121,626.90-181,641.84-103,666.20

Finding the Fourth Proportional to 121,626.90, 181,641.84 and 103,666.20

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Solution

The fourth proportional to 121,626.90, 181,641.84 and 103,666.20 is: 154,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,626.90 : 181,641.84 = 103,666.20 : x
  2. Step 2: Convert to fraction form
    121,626.90/181,641.84 = 103,666.20/x
  3. Step 3: Cross multiply
    121,626.90x = 181,641.84 × 103,666.20
  4. Step 4: Simplify right side
    121,626.90x = 18,830,119,313.81
  5. Step 5: Solve for x
    x = 18,830,119,313.81/121,626.90
  6. Step 6: Final answer
    x = 154,818.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.