Home / 103,868.12-143,348.12-61,440.32

Finding the Fourth Proportional to 103,868.12, 143,348.12 and 61,440.32

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Solution

The fourth proportional to 103,868.12, 143,348.12 and 61,440.32 is: 84,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,868.12 : 143,348.12 = 61,440.32 : x
  2. Step 2: Convert to fraction form
    103,868.12/143,348.12 = 61,440.32/x
  3. Step 3: Cross multiply
    103,868.12x = 143,348.12 × 61,440.32
  4. Step 4: Simplify right side
    103,868.12x = 8,807,354,364.20
  5. Step 5: Solve for x
    x = 8,807,354,364.20/103,868.12
  6. Step 6: Final answer
    x = 84,793.62

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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.