Home / 102,457.74-141,392.30-57,138.58

Finding the Fourth Proportional to 102,457.74, 141,392.30 and 57,138.58

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Solution

The fourth proportional to 102,457.74, 141,392.30 and 57,138.58 is: 78,851.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,457.74 : 141,392.30 = 57,138.58 : x
  2. Step 2: Convert to fraction form
    102,457.74/141,392.30 = 57,138.58/x
  3. Step 3: Cross multiply
    102,457.74x = 141,392.30 × 57,138.58
  4. Step 4: Simplify right side
    102,457.74x = 8,078,955,244.93
  5. Step 5: Solve for x
    x = 8,078,955,244.93/102,457.74
  6. Step 6: Final answer
    x = 78,851.59

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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.