Home / 121,771.28-182,671.68-42,869.36

Finding the Fourth Proportional to 121,771.28, 182,671.68 and 42,869.36

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Solution

The fourth proportional to 121,771.28, 182,671.68 and 42,869.36 is: 64,309.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,771.28 : 182,671.68 = 42,869.36 : x
  2. Step 2: Convert to fraction form
    121,771.28/182,671.68 = 42,869.36/x
  3. Step 3: Cross multiply
    121,771.28x = 182,671.68 × 42,869.36
  4. Step 4: Simplify right side
    121,771.28x = 7,831,018,011.72
  5. Step 5: Solve for x
    x = 7,831,018,011.72/121,771.28
  6. Step 6: Final answer
    x = 64,309.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.