Home / 111,502.34-153,803.23-66,148.21

Finding the Fourth Proportional to 111,502.34, 153,803.23 and 66,148.21

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Solution

The fourth proportional to 111,502.34, 153,803.23 and 66,148.21 is: 91,243.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,502.34 : 153,803.23 = 66,148.21 : x
  2. Step 2: Convert to fraction form
    111,502.34/153,803.23 = 66,148.21/x
  3. Step 3: Cross multiply
    111,502.34x = 153,803.23 × 66,148.21
  4. Step 4: Simplify right side
    111,502.34x = 10,173,807,973.11
  5. Step 5: Solve for x
    x = 10,173,807,973.11/111,502.34
  6. Step 6: Final answer
    x = 91,243.00

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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.