Home / 113,281.50-169,688.94-66,421.38

Finding the Fourth Proportional to 113,281.50, 169,688.94 and 66,421.38

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Solution

The fourth proportional to 113,281.50, 169,688.94 and 66,421.38 is: 99,495.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,281.50 : 169,688.94 = 66,421.38 : x
  2. Step 2: Convert to fraction form
    113,281.50/169,688.94 = 66,421.38/x
  3. Step 3: Cross multiply
    113,281.50x = 169,688.94 × 66,421.38
  4. Step 4: Simplify right side
    113,281.50x = 11,270,973,565.54
  5. Step 5: Solve for x
    x = 11,270,973,565.54/113,281.50
  6. Step 6: Final answer
    x = 99,495.27

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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.