Home / 145,232.91-217,886.33-85,312.06

Finding the Fourth Proportional to 145,232.91, 217,886.33 and 85,312.06

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Solution

The fourth proportional to 145,232.91, 217,886.33 and 85,312.06 is: 127,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,232.91 : 217,886.33 = 85,312.06 : x
  2. Step 2: Convert to fraction form
    145,232.91/217,886.33 = 85,312.06/x
  3. Step 3: Cross multiply
    145,232.91x = 217,886.33 × 85,312.06
  4. Step 4: Simplify right side
    145,232.91x = 18,588,330,686.86
  5. Step 5: Solve for x
    x = 18,588,330,686.86/145,232.91
  6. Step 6: Final answer
    x = 127,989.80

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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.