Home / 113,421.36-156,259.44-81,535.12

Finding the Fourth Proportional to 113,421.36, 156,259.44 and 81,535.12

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Solution

The fourth proportional to 113,421.36, 156,259.44 and 81,535.12 is: 112,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,421.36 : 156,259.44 = 81,535.12 : x
  2. Step 2: Convert to fraction form
    113,421.36/156,259.44 = 81,535.12/x
  3. Step 3: Cross multiply
    113,421.36x = 156,259.44 × 81,535.12
  4. Step 4: Simplify right side
    113,421.36x = 12,740,632,191.53
  5. Step 5: Solve for x
    x = 12,740,632,191.53/113,421.36
  6. Step 6: Final answer
    x = 112,330.10

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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.