Home / 142,376-196,472.66-81,948.58

Finding the Fourth Proportional to 142,376, 196,472.66 and 81,948.58

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Solution

The fourth proportional to 142,376, 196,472.66 and 81,948.58 is: 113,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,376 : 196,472.66 = 81,948.58 : x
  2. Step 2: Convert to fraction form
    142,376/196,472.66 = 81,948.58/x
  3. Step 3: Cross multiply
    142,376x = 196,472.66 × 81,948.58
  4. Step 4: Simplify right side
    142,376x = 16,100,655,495.82
  5. Step 5: Solve for x
    x = 16,100,655,495.82/142,376
  6. Step 6: Final answer
    x = 113,085.46

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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.