Home / 137,567.55-206,389.91-78,445.05

Finding the Fourth Proportional to 137,567.55, 206,389.91 and 78,445.05

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Solution

The fourth proportional to 137,567.55, 206,389.91 and 78,445.05 is: 117,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,567.55 : 206,389.91 = 78,445.05 : x
  2. Step 2: Convert to fraction form
    137,567.55/206,389.91 = 78,445.05/x
  3. Step 3: Cross multiply
    137,567.55x = 206,389.91 × 78,445.05
  4. Step 4: Simplify right side
    137,567.55x = 16,190,266,809.45
  5. Step 5: Solve for x
    x = 16,190,266,809.45/137,567.55
  6. Step 6: Final answer
    x = 117,689.58

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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.