Home / 98,776.66-136,038.27-85,343.62

Finding the Fourth Proportional to 98,776.66, 136,038.27 and 85,343.62

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Solution

The fourth proportional to 98,776.66, 136,038.27 and 85,343.62 is: 117,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,776.66 : 136,038.27 = 85,343.62 : x
  2. Step 2: Convert to fraction form
    98,776.66/136,038.27 = 85,343.62/x
  3. Step 3: Cross multiply
    98,776.66x = 136,038.27 × 85,343.62
  4. Step 4: Simplify right side
    98,776.66x = 11,609,998,420.34
  5. Step 5: Solve for x
    x = 11,609,998,420.34/98,776.66
  6. Step 6: Final answer
    x = 117,537.87

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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.