Home / 80,557,304.40-120,835,956.60-72,495,147.60

Finding the Fourth Proportional to 80,557,304.40, 120,835,956.60 and 72,495,147.60

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Solution

The fourth proportional to 80,557,304.40, 120,835,956.60 and 72,495,147.60 is: 108,742,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,557,304.40 : 120,835,956.60 = 72,495,147.60 : x
  2. Step 2: Convert to fraction form
    80,557,304.40/120,835,956.60 = 72,495,147.60/x
  3. Step 3: Cross multiply
    80,557,304.40x = 120,835,956.60 × 72,495,147.60
  4. Step 4: Simplify right side
    80,557,304.40x = 8,760,020,509,104,193
  5. Step 5: Solve for x
    x = 8,760,020,509,104,193/80,557,304.40
  6. Step 6: Final answer
    x = 108,742,721.40

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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.