Home / 99,840.10-137,545.20-69,570.51

Finding the Fourth Proportional to 99,840.10, 137,545.20 and 69,570.51

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Solution

The fourth proportional to 99,840.10, 137,545.20 and 69,570.51 is: 95,844.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,840.10 : 137,545.20 = 69,570.51 : x
  2. Step 2: Convert to fraction form
    99,840.10/137,545.20 = 69,570.51/x
  3. Step 3: Cross multiply
    99,840.10x = 137,545.20 × 69,570.51
  4. Step 4: Simplify right side
    99,840.10x = 9,569,089,712.05
  5. Step 5: Solve for x
    x = 9,569,089,712.05/99,840.10
  6. Step 6: Final answer
    x = 95,844.15

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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.