Home / 145,761.50-201,165.18-85,328.48

Finding the Fourth Proportional to 145,761.50, 201,165.18 and 85,328.48

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Solution

The fourth proportional to 145,761.50, 201,165.18 and 85,328.48 is: 117,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,761.50 : 201,165.18 = 85,328.48 : x
  2. Step 2: Convert to fraction form
    145,761.50/201,165.18 = 85,328.48/x
  3. Step 3: Cross multiply
    145,761.50x = 201,165.18 × 85,328.48
  4. Step 4: Simplify right side
    145,761.50x = 17,165,119,038.33
  5. Step 5: Solve for x
    x = 17,165,119,038.33/145,761.50
  6. Step 6: Final answer
    x = 117,761.68

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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.