Home / 145,641.72-218,117.92-92,891.28

Finding the Fourth Proportional to 145,641.72, 218,117.92 and 92,891.28

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Solution

The fourth proportional to 145,641.72, 218,117.92 and 92,891.28 is: 139,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,641.72 : 218,117.92 = 92,891.28 : x
  2. Step 2: Convert to fraction form
    145,641.72/218,117.92 = 92,891.28/x
  3. Step 3: Cross multiply
    145,641.72x = 218,117.92 × 92,891.28
  4. Step 4: Simplify right side
    145,641.72x = 20,261,252,779.74
  5. Step 5: Solve for x
    x = 20,261,252,779.74/145,641.72
  6. Step 6: Final answer
    x = 139,117.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.