Home / 143,562.09-215,106.17-83,421.74

Finding the Fourth Proportional to 143,562.09, 215,106.17 and 83,421.74

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Solution

The fourth proportional to 143,562.09, 215,106.17 and 83,421.74 is: 124,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,562.09 : 215,106.17 = 83,421.74 : x
  2. Step 2: Convert to fraction form
    143,562.09/215,106.17 = 83,421.74/x
  3. Step 3: Cross multiply
    143,562.09x = 215,106.17 × 83,421.74
  4. Step 4: Simplify right side
    143,562.09x = 17,944,529,493.50
  5. Step 5: Solve for x
    x = 17,944,529,493.50/143,562.09
  6. Step 6: Final answer
    x = 124,994.90

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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.