Home / 103,897.12-143,378.04-56,150.38

Finding the Fourth Proportional to 103,897.12, 143,378.04 and 56,150.38

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Solution

The fourth proportional to 103,897.12, 143,378.04 and 56,150.38 is: 77,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,897.12 : 143,378.04 = 56,150.38 : x
  2. Step 2: Convert to fraction form
    103,897.12/143,378.04 = 56,150.38/x
  3. Step 3: Cross multiply
    103,897.12x = 143,378.04 × 56,150.38
  4. Step 4: Simplify right side
    103,897.12x = 8,050,731,429.66
  5. Step 5: Solve for x
    x = 8,050,731,429.66/103,897.12
  6. Step 6: Final answer
    x = 77,487.53

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1.5x scale

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.