Home / 105,772.24-145,972.48-69,899.36

Finding the Fourth Proportional to 105,772.24, 145,972.48 and 69,899.36

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Solution

The fourth proportional to 105,772.24, 145,972.48 and 69,899.36 is: 96,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,772.24 : 145,972.48 = 69,899.36 : x
  2. Step 2: Convert to fraction form
    105,772.24/145,972.48 = 69,899.36/x
  3. Step 3: Cross multiply
    105,772.24x = 145,972.48 × 69,899.36
  4. Step 4: Simplify right side
    105,772.24x = 10,203,382,929.61
  5. Step 5: Solve for x
    x = 10,203,382,929.61/105,772.24
  6. Step 6: Final answer
    x = 96,465.60

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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.