Home / 159,434.04-220,018.86-87,812.28

Finding the Fourth Proportional to 159,434.04, 220,018.86 and 87,812.28

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Solution

The fourth proportional to 159,434.04, 220,018.86 and 87,812.28 is: 121,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,434.04 : 220,018.86 = 87,812.28 : x
  2. Step 2: Convert to fraction form
    159,434.04/220,018.86 = 87,812.28/x
  3. Step 3: Cross multiply
    159,434.04x = 220,018.86 × 87,812.28
  4. Step 4: Simplify right side
    159,434.04x = 19,320,357,739.60
  5. Step 5: Solve for x
    x = 19,320,357,739.60/159,434.04
  6. Step 6: Final answer
    x = 121,180.88

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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.