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Finding the Fourth Proportional to 140,276.30, 210,414.45 and 70,130.30

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Solution

The fourth proportional to 140,276.30, 210,414.45 and 70,130.30 is: 105,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,276.30 : 210,414.45 = 70,130.30 : x
  2. Step 2: Convert to fraction form
    140,276.30/210,414.45 = 70,130.30/x
  3. Step 3: Cross multiply
    140,276.30x = 210,414.45 × 70,130.30
  4. Step 4: Simplify right side
    140,276.30x = 14,756,428,502.84
  5. Step 5: Solve for x
    x = 14,756,428,502.84/140,276.30
  6. Step 6: Final answer
    x = 105,195.45

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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.