Home / 156,698.46-216,421.92-105,623.10

Finding the Fourth Proportional to 156,698.46, 216,421.92 and 105,623.10

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Solution

The fourth proportional to 156,698.46, 216,421.92 and 105,623.10 is: 145,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,698.46 : 216,421.92 = 105,623.10 : x
  2. Step 2: Convert to fraction form
    156,698.46/216,421.92 = 105,623.10/x
  3. Step 3: Cross multiply
    156,698.46x = 216,421.92 × 105,623.10
  4. Step 4: Simplify right side
    156,698.46x = 22,859,154,098.35
  5. Step 5: Solve for x
    x = 22,859,154,098.35/156,698.46
  6. Step 6: Final answer
    x = 145,879.89

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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.