Home / 145,420.78-218,136.04-40,230.94

Finding the Fourth Proportional to 145,420.78, 218,136.04 and 40,230.94

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Solution

The fourth proportional to 145,420.78, 218,136.04 and 40,230.94 is: 60,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,420.78 : 218,136.04 = 40,230.94 : x
  2. Step 2: Convert to fraction form
    145,420.78/218,136.04 = 40,230.94/x
  3. Step 3: Cross multiply
    145,420.78x = 218,136.04 × 40,230.94
  4. Step 4: Simplify right side
    145,420.78x = 8,775,817,937.08
  5. Step 5: Solve for x
    x = 8,775,817,937.08/145,420.78
  6. Step 6: Final answer
    x = 60,347.76

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1.5x scale

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.