Home / 145,845.60-218,422.80-89,858.40

Finding the Fourth Proportional to 145,845.60, 218,422.80 and 89,858.40

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Solution

The fourth proportional to 145,845.60, 218,422.80 and 89,858.40 is: 134,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,845.60 : 218,422.80 = 89,858.40 : x
  2. Step 2: Convert to fraction form
    145,845.60/218,422.80 = 89,858.40/x
  3. Step 3: Cross multiply
    145,845.60x = 218,422.80 × 89,858.40
  4. Step 4: Simplify right side
    145,845.60x = 19,627,123,331.52
  5. Step 5: Solve for x
    x = 19,627,123,331.52/145,845.60
  6. Step 6: Final answer
    x = 134,574.67

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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.