Home / 115,330.90-159,156.89-64,342.36

Finding the Fourth Proportional to 115,330.90, 159,156.89 and 64,342.36

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Solution

The fourth proportional to 115,330.90, 159,156.89 and 64,342.36 is: 88,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,330.90 : 159,156.89 = 64,342.36 : x
  2. Step 2: Convert to fraction form
    115,330.90/159,156.89 = 64,342.36/x
  3. Step 3: Cross multiply
    115,330.90x = 159,156.89 × 64,342.36
  4. Step 4: Simplify right side
    115,330.90x = 10,240,529,912.86
  5. Step 5: Solve for x
    x = 10,240,529,912.86/115,330.90
  6. Step 6: Final answer
    x = 88,792.60

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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.