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Finding the Fourth Proportional to 128,246.94, 176,989.94 and 70,885.04

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Solution

The fourth proportional to 128,246.94, 176,989.94 and 70,885.04 is: 97,826.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.94 : 176,989.94 = 70,885.04 : x
  2. Step 2: Convert to fraction form
    128,246.94/176,989.94 = 70,885.04/x
  3. Step 3: Cross multiply
    128,246.94x = 176,989.94 × 70,885.04
  4. Step 4: Simplify right side
    128,246.94x = 12,545,937,737.12
  5. Step 5: Solve for x
    x = 12,545,937,737.12/128,246.94
  6. Step 6: Final answer
    x = 97,826.41

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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.