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Finding the Fourth Proportional to 142,018.76, 212,908.86 and 61,995.85

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Solution

The fourth proportional to 142,018.76, 212,908.86 and 61,995.85 is: 92,941.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,018.76 : 212,908.86 = 61,995.85 : x
  2. Step 2: Convert to fraction form
    142,018.76/212,908.86 = 61,995.85/x
  3. Step 3: Cross multiply
    142,018.76x = 212,908.86 × 61,995.85
  4. Step 4: Simplify right side
    142,018.76x = 13,199,465,215.96
  5. Step 5: Solve for x
    x = 13,199,465,215.96/142,018.76
  6. Step 6: Final answer
    x = 92,941.70

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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.