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Finding the Fourth Proportional to 139,572.40, 209,358.60 and 125,575.60

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Solution

The fourth proportional to 139,572.40, 209,358.60 and 125,575.60 is: 188,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,572.40 : 209,358.60 = 125,575.60 : x
  2. Step 2: Convert to fraction form
    139,572.40/209,358.60 = 125,575.60/x
  3. Step 3: Cross multiply
    139,572.40x = 209,358.60 × 125,575.60
  4. Step 4: Simplify right side
    139,572.40x = 26,290,331,810.16
  5. Step 5: Solve for x
    x = 26,290,331,810.16/139,572.40
  6. Step 6: Final answer
    x = 188,363.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.