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Finding the Fourth Proportional to 128,063.90, 176,752.02 and 73,647.93

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Solution

The fourth proportional to 128,063.90, 176,752.02 and 73,647.93 is: 101,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,063.90 : 176,752.02 = 73,647.93 : x
  2. Step 2: Convert to fraction form
    128,063.90/176,752.02 = 73,647.93/x
  3. Step 3: Cross multiply
    128,063.90x = 176,752.02 × 73,647.93
  4. Step 4: Simplify right side
    128,063.90x = 13,017,421,335.32
  5. Step 5: Solve for x
    x = 13,017,421,335.32/128,063.90
  6. Step 6: Final answer
    x = 101,647.86

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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.