Home / 127,739.23-176,271.70-76,721.64

Finding the Fourth Proportional to 127,739.23, 176,271.70 and 76,721.64

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Solution

The fourth proportional to 127,739.23, 176,271.70 and 76,721.64 is: 105,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,739.23 : 176,271.70 = 76,721.64 : x
  2. Step 2: Convert to fraction form
    127,739.23/176,271.70 = 76,721.64/x
  3. Step 3: Cross multiply
    127,739.23x = 176,271.70 × 76,721.64
  4. Step 4: Simplify right side
    127,739.23x = 13,523,853,909.59
  5. Step 5: Solve for x
    x = 13,523,853,909.59/127,739.23
  6. Step 6: Final answer
    x = 105,870.80

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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.