Home / 127,681.53-176,187.48-78,615.36

Finding the Fourth Proportional to 127,681.53, 176,187.48 and 78,615.36

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Solution

The fourth proportional to 127,681.53, 176,187.48 and 78,615.36 is: 108,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,681.53 : 176,187.48 = 78,615.36 : x
  2. Step 2: Convert to fraction form
    127,681.53/176,187.48 = 78,615.36/x
  3. Step 3: Cross multiply
    127,681.53x = 176,187.48 × 78,615.36
  4. Step 4: Simplify right side
    127,681.53x = 13,851,041,554.38
  5. Step 5: Solve for x
    x = 13,851,041,554.38/127,681.53
  6. Step 6: Final answer
    x = 108,481.17

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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.