Home / 113,229.40-156,127.96-72,339.36

Finding the Fourth Proportional to 113,229.40, 156,127.96 and 72,339.36

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Solution

The fourth proportional to 113,229.40, 156,127.96 and 72,339.36 is: 99,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,229.40 : 156,127.96 = 72,339.36 : x
  2. Step 2: Convert to fraction form
    113,229.40/156,127.96 = 72,339.36/x
  3. Step 3: Cross multiply
    113,229.40x = 156,127.96 × 72,339.36
  4. Step 4: Simplify right side
    113,229.40x = 11,294,196,704.51
  5. Step 5: Solve for x
    x = 11,294,196,704.51/113,229.40
  6. Step 6: Final answer
    x = 99,746.15

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1.5x scale

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.