Home / 130,439.16-179,912.88-119,718.81

Finding the Fourth Proportional to 130,439.16, 179,912.88 and 119,718.81

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Solution

The fourth proportional to 130,439.16, 179,912.88 and 119,718.81 is: 165,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,439.16 : 179,912.88 = 119,718.81 : x
  2. Step 2: Convert to fraction form
    130,439.16/179,912.88 = 119,718.81/x
  3. Step 3: Cross multiply
    130,439.16x = 179,912.88 × 119,718.81
  4. Step 4: Simplify right side
    130,439.16x = 21,538,955,897.27
  5. Step 5: Solve for x
    x = 21,538,955,897.27/130,439.16
  6. Step 6: Final answer
    x = 165,126.45

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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.