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Finding the Fourth Proportional to 145,848.60, 218,772.90 and 139,627.80

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Solution

The fourth proportional to 145,848.60, 218,772.90 and 139,627.80 is: 209,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,848.60 : 218,772.90 = 139,627.80 : x
  2. Step 2: Convert to fraction form
    145,848.60/218,772.90 = 139,627.80/x
  3. Step 3: Cross multiply
    145,848.60x = 218,772.90 × 139,627.80
  4. Step 4: Simplify right side
    145,848.60x = 30,546,778,726.62
  5. Step 5: Solve for x
    x = 30,546,778,726.62/145,848.60
  6. Step 6: Final answer
    x = 209,441.70

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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.