Home / 113,730.12-156,936.88-109,908.40

Finding the Fourth Proportional to 113,730.12, 156,936.88 and 109,908.40

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Solution

The fourth proportional to 113,730.12, 156,936.88 and 109,908.40 is: 151,663.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,730.12 : 156,936.88 = 109,908.40 : x
  2. Step 2: Convert to fraction form
    113,730.12/156,936.88 = 109,908.40/x
  3. Step 3: Cross multiply
    113,730.12x = 156,936.88 × 109,908.40
  4. Step 4: Simplify right side
    113,730.12x = 17,248,681,381.79
  5. Step 5: Solve for x
    x = 17,248,681,381.79/113,730.12
  6. Step 6: Final answer
    x = 151,663.27

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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.