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Finding the Fourth Proportional to 181,031.70, 249,835.44 and 100,459.40

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Solution

The fourth proportional to 181,031.70, 249,835.44 and 100,459.40 is: 138,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,031.70 : 249,835.44 = 100,459.40 : x
  2. Step 2: Convert to fraction form
    181,031.70/249,835.44 = 100,459.40/x
  3. Step 3: Cross multiply
    181,031.70x = 249,835.44 × 100,459.40
  4. Step 4: Simplify right side
    181,031.70x = 25,098,318,401.14
  5. Step 5: Solve for x
    x = 25,098,318,401.14/181,031.70
  6. Step 6: Final answer
    x = 138,640.46

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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.