Home / 145,986.10-218,633.55-89,998.90

Finding the Fourth Proportional to 145,986.10, 218,633.55 and 89,998.90

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Solution

The fourth proportional to 145,986.10, 218,633.55 and 89,998.90 is: 134,785.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,986.10 : 218,633.55 = 89,998.90 : x
  2. Step 2: Convert to fraction form
    145,986.10/218,633.55 = 89,998.90/x
  3. Step 3: Cross multiply
    145,986.10x = 218,633.55 × 89,998.90
  4. Step 4: Simplify right side
    145,986.10x = 19,676,779,003.10
  5. Step 5: Solve for x
    x = 19,676,779,003.10/145,986.10
  6. Step 6: Final answer
    x = 134,785.29

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1.5x scale

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.