Home / 129,357,400.16-178,512,789.48-70,620,788

Finding the Fourth Proportional to 129,357,400.16, 178,512,789.48 and 70,620,788

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Solution

The fourth proportional to 129,357,400.16, 178,512,789.48 and 70,620,788 is: 97,456,456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,357,400.16 : 178,512,789.48 = 70,620,788 : x
  2. Step 2: Convert to fraction form
    129,357,400.16/178,512,789.48 = 70,620,788/x
  3. Step 3: Cross multiply
    129,357,400.16x = 178,512,789.48 × 70,620,788
  4. Step 4: Simplify right side
    129,357,400.16x = 12,606,713,861,155,710
  5. Step 5: Solve for x
    x = 12,606,713,861,155,710/129,357,400.16
  6. Step 6: Final answer
    x = 97,456,456.65

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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.