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Finding the Fourth Proportional to 152,956.60, 211,256.70 and 101,885.20

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Solution

The fourth proportional to 152,956.60, 211,256.70 and 101,885.20 is: 140,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,956.60 : 211,256.70 = 101,885.20 : x
  2. Step 2: Convert to fraction form
    152,956.60/211,256.70 = 101,885.20/x
  3. Step 3: Cross multiply
    152,956.60x = 211,256.70 × 101,885.20
  4. Step 4: Simplify right side
    152,956.60x = 21,523,931,130.84
  5. Step 5: Solve for x
    x = 21,523,931,130.84/152,956.60
  6. Step 6: Final answer
    x = 140,719.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.