Home / 142,510.35-196,633.67-85,920.51

Finding the Fourth Proportional to 142,510.35, 196,633.67 and 85,920.51

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Solution

The fourth proportional to 142,510.35, 196,633.67 and 85,920.51 is: 118,551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,510.35 : 196,633.67 = 85,920.51 : x
  2. Step 2: Convert to fraction form
    142,510.35/196,633.67 = 85,920.51/x
  3. Step 3: Cross multiply
    142,510.35x = 196,633.67 × 85,920.51
  4. Step 4: Simplify right side
    142,510.35x = 16,894,864,779.97
  5. Step 5: Solve for x
    x = 16,894,864,779.97/142,510.35
  6. Step 6: Final answer
    x = 118,551.84

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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.