Home / 149,365.52-206,123.76-81,382.32

Finding the Fourth Proportional to 149,365.52, 206,123.76 and 81,382.32

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Solution

The fourth proportional to 149,365.52, 206,123.76 and 81,382.32 is: 112,307.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,365.52 : 206,123.76 = 81,382.32 : x
  2. Step 2: Convert to fraction form
    149,365.52/206,123.76 = 81,382.32/x
  3. Step 3: Cross multiply
    149,365.52x = 206,123.76 × 81,382.32
  4. Step 4: Simplify right side
    149,365.52x = 16,774,829,795.92
  5. Step 5: Solve for x
    x = 16,774,829,795.92/149,365.52
  6. Step 6: Final answer
    x = 112,307.24

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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.