Home / 105,840.32-146,073.12-61,128.32

Finding the Fourth Proportional to 105,840.32, 146,073.12 and 61,128.32

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Solution

The fourth proportional to 105,840.32, 146,073.12 and 61,128.32 is: 84,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,840.32 : 146,073.12 = 61,128.32 : x
  2. Step 2: Convert to fraction form
    105,840.32/146,073.12 = 61,128.32/x
  3. Step 3: Cross multiply
    105,840.32x = 146,073.12 × 61,128.32
  4. Step 4: Simplify right side
    105,840.32x = 8,929,204,422.76
  5. Step 5: Solve for x
    x = 8,929,204,422.76/105,840.32
  6. Step 6: Final answer
    x = 84,364.87

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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.