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Finding the Fourth Proportional to 128,153.07, 176,847.03 and 70,789.14

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Solution

The fourth proportional to 128,153.07, 176,847.03 and 70,789.14 is: 97,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,153.07 : 176,847.03 = 70,789.14 : x
  2. Step 2: Convert to fraction form
    128,153.07/176,847.03 = 70,789.14/x
  3. Step 3: Cross multiply
    128,153.07x = 176,847.03 × 70,789.14
  4. Step 4: Simplify right side
    128,153.07x = 12,518,849,165.25
  5. Step 5: Solve for x
    x = 12,518,849,165.25/128,153.07
  6. Step 6: Final answer
    x = 97,686.69

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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.