Home / 185,779.95-256,392.15-105,221.81

Finding the Fourth Proportional to 185,779.95, 256,392.15 and 105,221.81

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Solution

The fourth proportional to 185,779.95, 256,392.15 and 105,221.81 is: 145,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,779.95 : 256,392.15 = 105,221.81 : x
  2. Step 2: Convert to fraction form
    185,779.95/256,392.15 = 105,221.81/x
  3. Step 3: Cross multiply
    185,779.95x = 256,392.15 × 105,221.81
  4. Step 4: Simplify right side
    185,779.95x = 26,978,044,925.70
  5. Step 5: Solve for x
    x = 26,978,044,925.70/185,779.95
  6. Step 6: Final answer
    x = 145,215.05

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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.