Home / 113,721.40-156,932.13-63,420.40

Finding the Fourth Proportional to 113,721.40, 156,932.13 and 63,420.40

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Solution

The fourth proportional to 113,721.40, 156,932.13 and 63,420.40 is: 87,518.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,721.40 : 156,932.13 = 63,420.40 : x
  2. Step 2: Convert to fraction form
    113,721.40/156,932.13 = 63,420.40/x
  3. Step 3: Cross multiply
    113,721.40x = 156,932.13 × 63,420.40
  4. Step 4: Simplify right side
    113,721.40x = 9,952,698,457.45
  5. Step 5: Solve for x
    x = 9,952,698,457.45/113,721.40
  6. Step 6: Final answer
    x = 87,518.25

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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.