Home / 127,870.72-176,347.20-80,129.28

Finding the Fourth Proportional to 127,870.72, 176,347.20 and 80,129.28

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Solution

The fourth proportional to 127,870.72, 176,347.20 and 80,129.28 is: 110,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,870.72 : 176,347.20 = 80,129.28 : x
  2. Step 2: Convert to fraction form
    127,870.72/176,347.20 = 80,129.28/x
  3. Step 3: Cross multiply
    127,870.72x = 176,347.20 × 80,129.28
  4. Step 4: Simplify right side
    127,870.72x = 14,130,574,166.02
  5. Step 5: Solve for x
    x = 14,130,574,166.02/127,870.72
  6. Step 6: Final answer
    x = 110,506.72

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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.