Home / 138,718.40-191,410.86-84,242.24

Finding the Fourth Proportional to 138,718.40, 191,410.86 and 84,242.24

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Solution

The fourth proportional to 138,718.40, 191,410.86 and 84,242.24 is: 116,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,718.40 : 191,410.86 = 84,242.24 : x
  2. Step 2: Convert to fraction form
    138,718.40/191,410.86 = 84,242.24/x
  3. Step 3: Cross multiply
    138,718.40x = 191,410.86 × 84,242.24
  4. Step 4: Simplify right side
    138,718.40x = 16,124,878,649.67
  5. Step 5: Solve for x
    x = 16,124,878,649.67/138,718.40
  6. Step 6: Final answer
    x = 116,241.82

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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.