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Finding the Fourth Proportional to 140,534.58, 210,802.23 and 57,428.58

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Solution

The fourth proportional to 140,534.58, 210,802.23 and 57,428.58 is: 86,143.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,534.58 : 210,802.23 = 57,428.58 : x
  2. Step 2: Convert to fraction form
    140,534.58/210,802.23 = 57,428.58/x
  3. Step 3: Cross multiply
    140,534.58x = 210,802.23 × 57,428.58
  4. Step 4: Simplify right side
    140,534.58x = 12,106,072,729.73
  5. Step 5: Solve for x
    x = 12,106,072,729.73/140,534.58
  6. Step 6: Final answer
    x = 86,143.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.