Home / 118,430.64-163,431.44-64,715.76

Finding the Fourth Proportional to 118,430.64, 163,431.44 and 64,715.76

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Solution

The fourth proportional to 118,430.64, 163,431.44 and 64,715.76 is: 89,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,430.64 : 163,431.44 = 64,715.76 : x
  2. Step 2: Convert to fraction form
    118,430.64/163,431.44 = 64,715.76/x
  3. Step 3: Cross multiply
    118,430.64x = 163,431.44 × 64,715.76
  4. Step 4: Simplify right side
    118,430.64x = 10,576,589,847.49
  5. Step 5: Solve for x
    x = 10,576,589,847.49/118,430.64
  6. Step 6: Final answer
    x = 89,306.20

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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.