Home / 128,013,434.75-176,659,078.54-69,276,102.76

Finding the Fourth Proportional to 128,013,434.75, 176,659,078.54 and 69,276,102.76

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Solution

The fourth proportional to 128,013,434.75, 176,659,078.54 and 69,276,102.76 is: 95,601,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013,434.75 : 176,659,078.54 = 69,276,102.76 : x
  2. Step 2: Convert to fraction form
    128,013,434.75/176,659,078.54 = 69,276,102.76/x
  3. Step 3: Cross multiply
    128,013,434.75x = 176,659,078.54 × 69,276,102.76
  4. Step 4: Simplify right side
    128,013,434.75x = 12,238,252,478,423,952
  5. Step 5: Solve for x
    x = 12,238,252,478,423,952/128,013,434.75
  6. Step 6: Final answer
    x = 95,601,313.27

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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.