Home / 142,863.40-197,166.18-86,271.40

Finding the Fourth Proportional to 142,863.40, 197,166.18 and 86,271.40

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Solution

The fourth proportional to 142,863.40, 197,166.18 and 86,271.40 is: 119,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,863.40 : 197,166.18 = 86,271.40 : x
  2. Step 2: Convert to fraction form
    142,863.40/197,166.18 = 86,271.40/x
  3. Step 3: Cross multiply
    142,863.40x = 197,166.18 × 86,271.40
  4. Step 4: Simplify right side
    142,863.40x = 17,009,802,381.25
  5. Step 5: Solve for x
    x = 17,009,802,381.25/142,863.40
  6. Step 6: Final answer
    x = 119,063.40

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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.