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Finding the Fourth Proportional to 113,675.58, 156,756.15 and 75,421.71

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Solution

The fourth proportional to 113,675.58, 156,756.15 and 75,421.71 is: 104,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,675.58 : 156,756.15 = 75,421.71 : x
  2. Step 2: Convert to fraction form
    113,675.58/156,756.15 = 75,421.71/x
  3. Step 3: Cross multiply
    113,675.58x = 156,756.15 × 75,421.71
  4. Step 4: Simplify right side
    113,675.58x = 11,822,816,886.02
  5. Step 5: Solve for x
    x = 11,822,816,886.02/113,675.58
  6. Step 6: Final answer
    x = 104,004.90

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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.