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Finding the Fourth Proportional to 140,140.98, 210,109.63 and 55,875.87

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Solution

The fourth proportional to 140,140.98, 210,109.63 and 55,875.87 is: 83,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,140.98 : 210,109.63 = 55,875.87 : x
  2. Step 2: Convert to fraction form
    140,140.98/210,109.63 = 55,875.87/x
  3. Step 3: Cross multiply
    140,140.98x = 210,109.63 × 55,875.87
  4. Step 4: Simplify right side
    140,140.98x = 11,740,057,041.70
  5. Step 5: Solve for x
    x = 11,740,057,041.70/140,140.98
  6. Step 6: Final answer
    x = 83,773.19

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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.