Home / 142,718.40-196,551.90-139,618.94

Finding the Fourth Proportional to 142,718.40, 196,551.90 and 139,618.94

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Solution

The fourth proportional to 142,718.40, 196,551.90 and 139,618.94 is: 192,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,718.40 : 196,551.90 = 139,618.94 : x
  2. Step 2: Convert to fraction form
    142,718.40/196,551.90 = 139,618.94/x
  3. Step 3: Cross multiply
    142,718.40x = 196,551.90 × 139,618.94
  4. Step 4: Simplify right side
    142,718.40x = 27,442,366,950.23
  5. Step 5: Solve for x
    x = 27,442,366,950.23/142,718.40
  6. Step 6: Final answer
    x = 192,283.31

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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.