Home / 145,541.81-218,312.72-40,360.78

Finding the Fourth Proportional to 145,541.81, 218,312.72 and 40,360.78

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Solution

The fourth proportional to 145,541.81, 218,312.72 and 40,360.78 is: 60,541.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541.81 : 218,312.72 = 40,360.78 : x
  2. Step 2: Convert to fraction form
    145,541.81/218,312.72 = 40,360.78/x
  3. Step 3: Cross multiply
    145,541.81x = 218,312.72 × 40,360.78
  4. Step 4: Simplify right side
    145,541.81x = 8,811,271,885.56
  5. Step 5: Solve for x
    x = 8,811,271,885.56/145,541.81
  6. Step 6: Final answer
    x = 60,541.17

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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.