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Finding the Fourth Proportional to 125,291.53, 172,900.20 and 70,842.81

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Solution

The fourth proportional to 125,291.53, 172,900.20 and 70,842.81 is: 97,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,291.53 : 172,900.20 = 70,842.81 : x
  2. Step 2: Convert to fraction form
    125,291.53/172,900.20 = 70,842.81/x
  3. Step 3: Cross multiply
    125,291.53x = 172,900.20 × 70,842.81
  4. Step 4: Simplify right side
    125,291.53x = 12,248,736,017.56
  5. Step 5: Solve for x
    x = 12,248,736,017.56/125,291.53
  6. Step 6: Final answer
    x = 97,761.88

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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.