Home / 103,811.65-143,260.08-56,065.01

Finding the Fourth Proportional to 103,811.65, 143,260.08 and 56,065.01

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Solution

The fourth proportional to 103,811.65, 143,260.08 and 56,065.01 is: 77,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,811.65 : 143,260.08 = 56,065.01 : x
  2. Step 2: Convert to fraction form
    103,811.65/143,260.08 = 56,065.01/x
  3. Step 3: Cross multiply
    103,811.65x = 143,260.08 × 56,065.01
  4. Step 4: Simplify right side
    103,811.65x = 8,031,877,817.80
  5. Step 5: Solve for x
    x = 8,031,877,817.80/103,811.65
  6. Step 6: Final answer
    x = 77,369.72

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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.