Home / 145,582.10-218,299.30-66,628.70

Finding the Fourth Proportional to 145,582.10, 218,299.30 and 66,628.70

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Solution

The fourth proportional to 145,582.10, 218,299.30 and 66,628.70 is: 99,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,582.10 : 218,299.30 = 66,628.70 : x
  2. Step 2: Convert to fraction form
    145,582.10/218,299.30 = 66,628.70/x
  3. Step 3: Cross multiply
    145,582.10x = 218,299.30 × 66,628.70
  4. Step 4: Simplify right side
    145,582.10x = 14,544,998,569.91
  5. Step 5: Solve for x
    x = 14,544,998,569.91/145,582.10
  6. Step 6: Final answer
    x = 99,909.25

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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.