Home / 127,742.76-176,288.70-70,385.76

Finding the Fourth Proportional to 127,742.76, 176,288.70 and 70,385.76

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Solution

The fourth proportional to 127,742.76, 176,288.70 and 70,385.76 is: 97,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,742.76 : 176,288.70 = 70,385.76 : x
  2. Step 2: Convert to fraction form
    127,742.76/176,288.70 = 70,385.76/x
  3. Step 3: Cross multiply
    127,742.76x = 176,288.70 × 70,385.76
  4. Step 4: Simplify right side
    127,742.76x = 12,408,214,128.91
  5. Step 5: Solve for x
    x = 12,408,214,128.91/127,742.76
  6. Step 6: Final answer
    x = 97,134.38

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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.