Home / 112,650.12-155,457.21-61,663.11

Finding the Fourth Proportional to 112,650.12, 155,457.21 and 61,663.11

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Solution

The fourth proportional to 112,650.12, 155,457.21 and 61,663.11 is: 85,095.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,650.12 : 155,457.21 = 61,663.11 : x
  2. Step 2: Convert to fraction form
    112,650.12/155,457.21 = 61,663.11/x
  3. Step 3: Cross multiply
    112,650.12x = 155,457.21 × 61,663.11
  4. Step 4: Simplify right side
    112,650.12x = 9,585,975,040.52
  5. Step 5: Solve for x
    x = 9,585,975,040.52/112,650.12
  6. Step 6: Final answer
    x = 85,095.12

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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.