Home / 145,814.20-218,721.30-52,307.80

Finding the Fourth Proportional to 145,814.20, 218,721.30 and 52,307.80

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Solution

The fourth proportional to 145,814.20, 218,721.30 and 52,307.80 is: 78,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.20 : 218,721.30 = 52,307.80 : x
  2. Step 2: Convert to fraction form
    145,814.20/218,721.30 = 52,307.80/x
  3. Step 3: Cross multiply
    145,814.20x = 218,721.30 × 52,307.80
  4. Step 4: Simplify right side
    145,814.20x = 11,440,830,016.14
  5. Step 5: Solve for x
    x = 11,440,830,016.14/145,814.20
  6. Step 6: Final answer
    x = 78,461.70

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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.