Home / 142,045.23-196,033.48-81,636.95

Finding the Fourth Proportional to 142,045.23, 196,033.48 and 81,636.95

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Solution

The fourth proportional to 142,045.23, 196,033.48 and 81,636.95 is: 112,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,045.23 : 196,033.48 = 81,636.95 : x
  2. Step 2: Convert to fraction form
    142,045.23/196,033.48 = 81,636.95/x
  3. Step 3: Cross multiply
    142,045.23x = 196,033.48 × 81,636.95
  4. Step 4: Simplify right side
    142,045.23x = 16,003,574,220.83
  5. Step 5: Solve for x
    x = 16,003,574,220.83/142,045.23
  6. Step 6: Final answer
    x = 112,665.34

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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.