Home / 100,752.02-139,037.78-55,429.02

Finding the Fourth Proportional to 100,752.02, 139,037.78 and 55,429.02

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Solution

The fourth proportional to 100,752.02, 139,037.78 and 55,429.02 is: 76,492.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,752.02 : 139,037.78 = 55,429.02 : x
  2. Step 2: Convert to fraction form
    100,752.02/139,037.78 = 55,429.02/x
  3. Step 3: Cross multiply
    100,752.02x = 139,037.78 × 55,429.02
  4. Step 4: Simplify right side
    100,752.02x = 7,706,727,888.38
  5. Step 5: Solve for x
    x = 7,706,727,888.38/100,752.02
  6. Step 6: Final answer
    x = 76,492.04

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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.