Home / 145,307.22-217,554.81-78,508.01

Finding the Fourth Proportional to 145,307.22, 217,554.81 and 78,508.01

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Solution

The fourth proportional to 145,307.22, 217,554.81 and 78,508.01 is: 117,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,307.22 : 217,554.81 = 78,508.01 : x
  2. Step 2: Convert to fraction form
    145,307.22/217,554.81 = 78,508.01/x
  3. Step 3: Cross multiply
    145,307.22x = 217,554.81 × 78,508.01
  4. Step 4: Simplify right side
    145,307.22x = 17,079,795,199.03
  5. Step 5: Solve for x
    x = 17,079,795,199.03/145,307.22
  6. Step 6: Final answer
    x = 117,542.65

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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.