Home / 145,768.60-201,163.98-81,244.47

Finding the Fourth Proportional to 145,768.60, 201,163.98 and 81,244.47

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Solution

The fourth proportional to 145,768.60, 201,163.98 and 81,244.47 is: 112,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,768.60 : 201,163.98 = 81,244.47 : x
  2. Step 2: Convert to fraction form
    145,768.60/201,163.98 = 81,244.47/x
  3. Step 3: Cross multiply
    145,768.60x = 201,163.98 × 81,244.47
  4. Step 4: Simplify right side
    145,768.60x = 16,343,460,637.17
  5. Step 5: Solve for x
    x = 16,343,460,637.17/145,768.60
  6. Step 6: Final answer
    x = 112,119.21

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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.