Home / 145,487.16-217,939.05-66,492.72

Finding the Fourth Proportional to 145,487.16, 217,939.05 and 66,492.72

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Solution

The fourth proportional to 145,487.16, 217,939.05 and 66,492.72 is: 99,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,487.16 : 217,939.05 = 66,492.72 : x
  2. Step 2: Convert to fraction form
    145,487.16/217,939.05 = 66,492.72/x
  3. Step 3: Cross multiply
    145,487.16x = 217,939.05 × 66,492.72
  4. Step 4: Simplify right side
    145,487.16x = 14,491,360,228.72
  5. Step 5: Solve for x
    x = 14,491,360,228.72/145,487.16
  6. Step 6: Final answer
    x = 99,605.77

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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.