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Finding the Fourth Proportional to 145,177.80, 217,710.48 and 56,419.68

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Solution

The fourth proportional to 145,177.80, 217,710.48 and 56,419.68 is: 84,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,177.80 : 217,710.48 = 56,419.68 : x
  2. Step 2: Convert to fraction form
    145,177.80/217,710.48 = 56,419.68/x
  3. Step 3: Cross multiply
    145,177.80x = 217,710.48 × 56,419.68
  4. Step 4: Simplify right side
    145,177.80x = 12,283,155,614.25
  5. Step 5: Solve for x
    x = 12,283,155,614.25/145,177.80
  6. Step 6: Final answer
    x = 84,607.67

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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.