Home / 113,385,402.30-156,388,315.87-85,509,287.43

Finding the Fourth Proportional to 113,385,402.30, 156,388,315.87 and 85,509,287.43

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Solution

The fourth proportional to 113,385,402.30, 156,388,315.87 and 85,509,287.43 is: 117,939,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,385,402.30 : 156,388,315.87 = 85,509,287.43 : x
  2. Step 2: Convert to fraction form
    113,385,402.30/156,388,315.87 = 85,509,287.43/x
  3. Step 3: Cross multiply
    113,385,402.30x = 156,388,315.87 × 85,509,287.43
  4. Step 4: Simplify right side
    113,385,402.30x = 13,372,653,452,421,462
  5. Step 5: Solve for x
    x = 13,372,653,452,421,462/113,385,402.30
  6. Step 6: Final answer
    x = 117,939,815.72

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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.