Home / 98,116.85-135,442.40-66,328.81

Finding the Fourth Proportional to 98,116.85, 135,442.40 and 66,328.81

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Solution

The fourth proportional to 98,116.85, 135,442.40 and 66,328.81 is: 91,561.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,116.85 : 135,442.40 = 66,328.81 : x
  2. Step 2: Convert to fraction form
    98,116.85/135,442.40 = 66,328.81/x
  3. Step 3: Cross multiply
    98,116.85x = 135,442.40 × 66,328.81
  4. Step 4: Simplify right side
    98,116.85x = 8,983,732,545.29
  5. Step 5: Solve for x
    x = 8,983,732,545.29/98,116.85
  6. Step 6: Final answer
    x = 91,561.56

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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.