Home / 100,734.02-139,013.24-55,416.63

Finding the Fourth Proportional to 100,734.02, 139,013.24 and 55,416.63

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Solution

The fourth proportional to 100,734.02, 139,013.24 and 55,416.63 is: 76,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,734.02 : 139,013.24 = 55,416.63 : x
  2. Step 2: Convert to fraction form
    100,734.02/139,013.24 = 55,416.63/x
  3. Step 3: Cross multiply
    100,734.02x = 139,013.24 × 55,416.63
  4. Step 4: Simplify right side
    100,734.02x = 7,703,645,009.10
  5. Step 5: Solve for x
    x = 7,703,645,009.10/100,734.02
  6. Step 6: Final answer
    x = 76,475.11

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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.