Home / 103,902.18-143,384.67-56,155.38

Finding the Fourth Proportional to 103,902.18, 143,384.67 and 56,155.38

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Solution

The fourth proportional to 103,902.18, 143,384.67 and 56,155.38 is: 77,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,902.18 : 143,384.67 = 56,155.38 : x
  2. Step 2: Convert to fraction form
    103,902.18/143,384.67 = 56,155.38/x
  3. Step 3: Cross multiply
    103,902.18x = 143,384.67 × 56,155.38
  4. Step 4: Simplify right side
    103,902.18x = 8,051,820,630.02
  5. Step 5: Solve for x
    x = 8,051,820,630.02/103,902.18
  6. Step 6: Final answer
    x = 77,494.24

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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.