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Finding the Fourth Proportional to 140,430.70, 210,459.74 and 61,458.94

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Solution

The fourth proportional to 140,430.70, 210,459.74 and 61,458.94 is: 92,106.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,430.70 : 210,459.74 = 61,458.94 : x
  2. Step 2: Convert to fraction form
    140,430.70/210,459.74 = 61,458.94/x
  3. Step 3: Cross multiply
    140,430.70x = 210,459.74 × 61,458.94
  4. Step 4: Simplify right side
    140,430.70x = 12,934,631,634.42
  5. Step 5: Solve for x
    x = 12,934,631,634.42/140,430.70
  6. Step 6: Final answer
    x = 92,106.87

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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.