Home / 149,630.51-206,495.08-81,651.21

Finding the Fourth Proportional to 149,630.51, 206,495.08 and 81,651.21

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Solution

The fourth proportional to 149,630.51, 206,495.08 and 81,651.21 is: 112,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,630.51 : 206,495.08 = 81,651.21 : x
  2. Step 2: Convert to fraction form
    149,630.51/206,495.08 = 81,651.21/x
  3. Step 3: Cross multiply
    149,630.51x = 206,495.08 × 81,651.21
  4. Step 4: Simplify right side
    149,630.51x = 16,860,574,134.51
  5. Step 5: Solve for x
    x = 16,860,574,134.51/149,630.51
  6. Step 6: Final answer
    x = 112,681.39

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1.5x scale

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.