Home / 76,143.18-105,075.99-42,149.73

Finding the Fourth Proportional to 76,143.18, 105,075.99 and 42,149.73

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Solution

The fourth proportional to 76,143.18, 105,075.99 and 42,149.73 is: 58,165.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.18 : 105,075.99 = 42,149.73 : x
  2. Step 2: Convert to fraction form
    76,143.18/105,075.99 = 42,149.73/x
  3. Step 3: Cross multiply
    76,143.18x = 105,075.99 × 42,149.73
  4. Step 4: Simplify right side
    76,143.18x = 4,428,924,607.98
  5. Step 5: Solve for x
    x = 4,428,924,607.98/76,143.18
  6. Step 6: Final answer
    x = 58,165.74

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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.