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Finding the Fourth Proportional to 145,293.76, 200,510.52 and 81,630.28

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Solution

The fourth proportional to 145,293.76, 200,510.52 and 81,630.28 is: 112,652.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,293.76 : 200,510.52 = 81,630.28 : x
  2. Step 2: Convert to fraction form
    145,293.76/200,510.52 = 81,630.28/x
  3. Step 3: Cross multiply
    145,293.76x = 200,510.52 × 81,630.28
  4. Step 4: Simplify right side
    145,293.76x = 16,367,729,890.55
  5. Step 5: Solve for x
    x = 16,367,729,890.55/145,293.76
  6. Step 6: Final answer
    x = 112,652.67

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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.