Home / 145,520.90-200,812.95-80,988.31

Finding the Fourth Proportional to 145,520.90, 200,812.95 and 80,988.31

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Solution

The fourth proportional to 145,520.90, 200,812.95 and 80,988.31 is: 111,760.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,520.90 : 200,812.95 = 80,988.31 : x
  2. Step 2: Convert to fraction form
    145,520.90/200,812.95 = 80,988.31/x
  3. Step 3: Cross multiply
    145,520.90x = 200,812.95 × 80,988.31
  4. Step 4: Simplify right side
    145,520.90x = 16,263,501,877.84
  5. Step 5: Solve for x
    x = 16,263,501,877.84/145,520.90
  6. Step 6: Final answer
    x = 111,760.59

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1.5x scale

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.