Home / 149,746.98-206,651.28-81,764.55

Finding the Fourth Proportional to 149,746.98, 206,651.28 and 81,764.55

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Solution

The fourth proportional to 149,746.98, 206,651.28 and 81,764.55 is: 112,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,746.98 : 206,651.28 = 81,764.55 : x
  2. Step 2: Convert to fraction form
    149,746.98/206,651.28 = 81,764.55/x
  3. Step 3: Cross multiply
    149,746.98x = 206,651.28 × 81,764.55
  4. Step 4: Simplify right side
    149,746.98x = 16,896,748,916.12
  5. Step 5: Solve for x
    x = 16,896,748,916.12/149,746.98
  6. Step 6: Final answer
    x = 112,835.32

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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.