Home / 80,557,266.90-120,835,900.35-72,495,110.10

Finding the Fourth Proportional to 80,557,266.90, 120,835,900.35 and 72,495,110.10

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Solution

The fourth proportional to 80,557,266.90, 120,835,900.35 and 72,495,110.10 is: 108,742,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,557,266.90 : 120,835,900.35 = 72,495,110.10 : x
  2. Step 2: Convert to fraction form
    80,557,266.90/120,835,900.35 = 72,495,110.10/x
  3. Step 3: Cross multiply
    80,557,266.90x = 120,835,900.35 × 72,495,110.10
  4. Step 4: Simplify right side
    80,557,266.90x = 8,760,011,899,905,877
  5. Step 5: Solve for x
    x = 8,760,011,899,905,877/80,557,266.90
  6. Step 6: Final answer
    x = 108,742,665.15

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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.