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Finding the Fourth Proportional to 142,008.76, 212,859.10 and 70,011.56

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Solution

The fourth proportional to 142,008.76, 212,859.10 and 70,011.56 is: 104,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,008.76 : 212,859.10 = 70,011.56 : x
  2. Step 2: Convert to fraction form
    142,008.76/212,859.10 = 70,011.56/x
  3. Step 3: Cross multiply
    142,008.76x = 212,859.10 × 70,011.56
  4. Step 4: Simplify right side
    142,008.76x = 14,902,597,651.20
  5. Step 5: Solve for x
    x = 14,902,597,651.20/142,008.76
  6. Step 6: Final answer
    x = 104,941.40

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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.