Home / 118,145.60-163,038.24-64,430.64

Finding the Fourth Proportional to 118,145.60, 163,038.24 and 64,430.64

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Solution

The fourth proportional to 118,145.60, 163,038.24 and 64,430.64 is: 88,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,145.60 : 163,038.24 = 64,430.64 : x
  2. Step 2: Convert to fraction form
    118,145.60/163,038.24 = 64,430.64/x
  3. Step 3: Cross multiply
    118,145.60x = 163,038.24 × 64,430.64
  4. Step 4: Simplify right side
    118,145.60x = 10,504,658,147.67
  5. Step 5: Solve for x
    x = 10,504,658,147.67/118,145.60
  6. Step 6: Final answer
    x = 88,912.82

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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.