Home / 145,683.42-201,040.10-81,152.58

Finding the Fourth Proportional to 145,683.42, 201,040.10 and 81,152.58

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Solution

The fourth proportional to 145,683.42, 201,040.10 and 81,152.58 is: 111,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,683.42 : 201,040.10 = 81,152.58 : x
  2. Step 2: Convert to fraction form
    145,683.42/201,040.10 = 81,152.58/x
  3. Step 3: Cross multiply
    145,683.42x = 201,040.10 × 81,152.58
  4. Step 4: Simplify right side
    145,683.42x = 16,314,922,798.46
  5. Step 5: Solve for x
    x = 16,314,922,798.46/145,683.42
  6. Step 6: Final answer
    x = 111,988.88

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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.