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Finding the Fourth Proportional to 128,074.96, 176,754.01 and 70,719.98

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Solution

The fourth proportional to 128,074.96, 176,754.01 and 70,719.98 is: 97,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,074.96 : 176,754.01 = 70,719.98 : x
  2. Step 2: Convert to fraction form
    128,074.96/176,754.01 = 70,719.98/x
  3. Step 3: Cross multiply
    128,074.96x = 176,754.01 × 70,719.98
  4. Step 4: Simplify right side
    128,074.96x = 12,500,038,991.55
  5. Step 5: Solve for x
    x = 12,500,038,991.55/128,074.96
  6. Step 6: Final answer
    x = 97,599.40

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1.5x scale

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.