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Finding the Fourth Proportional to 180,887.52, 249,640.56 and 105,434.40

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Solution

The fourth proportional to 180,887.52, 249,640.56 and 105,434.40 is: 145,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,887.52 : 249,640.56 = 105,434.40 : x
  2. Step 2: Convert to fraction form
    180,887.52/249,640.56 = 105,434.40/x
  3. Step 3: Cross multiply
    180,887.52x = 249,640.56 × 105,434.40
  4. Step 4: Simplify right side
    180,887.52x = 26,320,702,659.26
  5. Step 5: Solve for x
    x = 26,320,702,659.26/180,887.52
  6. Step 6: Final answer
    x = 145,508.67

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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.