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Finding the Fourth Proportional to 180,556.14, 249,143.03 and 99,981.59

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Solution

The fourth proportional to 180,556.14, 249,143.03 and 99,981.59 is: 137,961.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,556.14 : 249,143.03 = 99,981.59 : x
  2. Step 2: Convert to fraction form
    180,556.14/249,143.03 = 99,981.59/x
  3. Step 3: Cross multiply
    180,556.14x = 249,143.03 × 99,981.59
  4. Step 4: Simplify right side
    180,556.14x = 24,909,716,276.82
  5. Step 5: Solve for x
    x = 24,909,716,276.82/180,556.14
  6. Step 6: Final answer
    x = 137,961.06

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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.