Home / 113,137.24-156,130.32-70,720.80

Finding the Fourth Proportional to 113,137.24, 156,130.32 and 70,720.80

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Solution

The fourth proportional to 113,137.24, 156,130.32 and 70,720.80 is: 97,595.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,137.24 : 156,130.32 = 70,720.80 : x
  2. Step 2: Convert to fraction form
    113,137.24/156,130.32 = 70,720.80/x
  3. Step 3: Cross multiply
    113,137.24x = 156,130.32 × 70,720.80
  4. Step 4: Simplify right side
    113,137.24x = 11,041,661,134.66
  5. Step 5: Solve for x
    x = 11,041,661,134.66/113,137.24
  6. Step 6: Final answer
    x = 97,595.28

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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.