Home / 132,870.40-198,729.60-118,931.20

Finding the Fourth Proportional to 132,870.40, 198,729.60 and 118,931.20

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Solution

The fourth proportional to 132,870.40, 198,729.60 and 118,931.20 is: 177,881.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,870.40 : 198,729.60 = 118,931.20 : x
  2. Step 2: Convert to fraction form
    132,870.40/198,729.60 = 118,931.20/x
  3. Step 3: Cross multiply
    132,870.40x = 198,729.60 × 118,931.20
  4. Step 4: Simplify right side
    132,870.40x = 23,635,149,803.52
  5. Step 5: Solve for x
    x = 23,635,149,803.52/132,870.40
  6. Step 6: Final answer
    x = 177,881.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.