Home / 142,280.70-196,347.88-77,749.94

Finding the Fourth Proportional to 142,280.70, 196,347.88 and 77,749.94

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Solution

The fourth proportional to 142,280.70, 196,347.88 and 77,749.94 is: 107,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,280.70 : 196,347.88 = 77,749.94 : x
  2. Step 2: Convert to fraction form
    142,280.70/196,347.88 = 77,749.94/x
  3. Step 3: Cross multiply
    142,280.70x = 196,347.88 × 77,749.94
  4. Step 4: Simplify right side
    142,280.70x = 15,266,035,889.13
  5. Step 5: Solve for x
    x = 15,266,035,889.13/142,280.70
  6. Step 6: Final answer
    x = 107,295.20

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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.