Home / 140,870.48-211,305.69-85,349.84

Finding the Fourth Proportional to 140,870.48, 211,305.69 and 85,349.84

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Solution

The fourth proportional to 140,870.48, 211,305.69 and 85,349.84 is: 128,024.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,870.48 : 211,305.69 = 85,349.84 : x
  2. Step 2: Convert to fraction form
    140,870.48/211,305.69 = 85,349.84/x
  3. Step 3: Cross multiply
    140,870.48x = 211,305.69 × 85,349.84
  4. Step 4: Simplify right side
    140,870.48x = 18,034,905,776.06
  5. Step 5: Solve for x
    x = 18,034,905,776.06/140,870.48
  6. Step 6: Final answer
    x = 128,024.74

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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.