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Finding the Fourth Proportional to 140,507.40, 210,830.30 and 65,616.68

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Solution

The fourth proportional to 140,507.40, 210,830.30 and 65,616.68 is: 98,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,507.40 : 210,830.30 = 65,616.68 : x
  2. Step 2: Convert to fraction form
    140,507.40/210,830.30 = 65,616.68/x
  3. Step 3: Cross multiply
    140,507.40x = 210,830.30 × 65,616.68
  4. Step 4: Simplify right side
    140,507.40x = 13,833,984,329.40
  5. Step 5: Solve for x
    x = 13,833,984,329.40/140,507.40
  6. Step 6: Final answer
    x = 98,457.34

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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.