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Finding the Fourth Proportional to 128,210.46, 176,929.46 and 70,853.64

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Solution

The fourth proportional to 128,210.46, 176,929.46 and 70,853.64 is: 97,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210.46 : 176,929.46 = 70,853.64 : x
  2. Step 2: Convert to fraction form
    128,210.46/176,929.46 = 70,853.64/x
  3. Step 3: Cross multiply
    128,210.46x = 176,929.46 × 70,853.64
  4. Step 4: Simplify right side
    128,210.46x = 12,536,096,264.23
  5. Step 5: Solve for x
    x = 12,536,096,264.23/128,210.46
  6. Step 6: Final answer
    x = 97,777.48

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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.