Home / 115,281.91-172,981.67-77,763.35

Finding the Fourth Proportional to 115,281.91, 172,981.67 and 77,763.35

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Solution

The fourth proportional to 115,281.91, 172,981.67 and 77,763.35 is: 116,684.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,281.91 : 172,981.67 = 77,763.35 : x
  2. Step 2: Convert to fraction form
    115,281.91/172,981.67 = 77,763.35/x
  3. Step 3: Cross multiply
    115,281.91x = 172,981.67 × 77,763.35
  4. Step 4: Simplify right side
    115,281.91x = 13,451,634,191.43
  5. Step 5: Solve for x
    x = 13,451,634,191.43/115,281.91
  6. Step 6: Final answer
    x = 116,684.69

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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.