Home / 132,210,215.20-198,315,322.80-80,478,042.40

Finding the Fourth Proportional to 132,210,215.20, 198,315,322.80 and 80,478,042.40

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Solution

The fourth proportional to 132,210,215.20, 198,315,322.80 and 80,478,042.40 is: 120,717,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,210,215.20 : 198,315,322.80 = 80,478,042.40 : x
  2. Step 2: Convert to fraction form
    132,210,215.20/198,315,322.80 = 80,478,042.40/x
  3. Step 3: Cross multiply
    132,210,215.20x = 198,315,322.80 × 80,478,042.40
  4. Step 4: Simplify right side
    132,210,215.20x = 15,960,028,956,868,088
  5. Step 5: Solve for x
    x = 15,960,028,956,868,088/132,210,215.20
  6. Step 6: Final answer
    x = 120,717,063.60

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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.