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Finding the Fourth Proportional to 128,027.42, 176,651.47 and 73,569.07

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Solution

The fourth proportional to 128,027.42, 176,651.47 and 73,569.07 is: 101,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,027.42 : 176,651.47 = 73,569.07 : x
  2. Step 2: Convert to fraction form
    128,027.42/176,651.47 = 73,569.07/x
  3. Step 3: Cross multiply
    128,027.42x = 176,651.47 × 73,569.07
  4. Step 4: Simplify right side
    128,027.42x = 12,996,084,362.03
  5. Step 5: Solve for x
    x = 12,996,084,362.03/128,027.42
  6. Step 6: Final answer
    x = 101,510.16

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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.