Home / 113,140.81-156,146.57-72,341.92

Finding the Fourth Proportional to 113,140.81, 156,146.57 and 72,341.92

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Solution

The fourth proportional to 113,140.81, 156,146.57 and 72,341.92 is: 99,839.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,140.81 : 156,146.57 = 72,341.92 : x
  2. Step 2: Convert to fraction form
    113,140.81/156,146.57 = 72,341.92/x
  3. Step 3: Cross multiply
    113,140.81x = 156,146.57 × 72,341.92
  4. Step 4: Simplify right side
    113,140.81x = 11,295,942,675.21
  5. Step 5: Solve for x
    x = 11,295,942,675.21/113,140.81
  6. Step 6: Final answer
    x = 99,839.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.