Home / 151,346,328.59-208,857,931.38-81,731,707.43

Finding the Fourth Proportional to 151,346,328.59, 208,857,931.38 and 81,731,707.43

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Solution

The fourth proportional to 151,346,328.59, 208,857,931.38 and 81,731,707.43 is: 112,789,755.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,346,328.59 : 208,857,931.38 = 81,731,707.43 : x
  2. Step 2: Convert to fraction form
    151,346,328.59/208,857,931.38 = 81,731,707.43/x
  3. Step 3: Cross multiply
    151,346,328.59x = 208,857,931.38 × 81,731,707.43
  4. Step 4: Simplify right side
    151,346,328.59x = 17,070,315,340,940,886
  5. Step 5: Solve for x
    x = 17,070,315,340,940,886/151,346,328.59
  6. Step 6: Final answer
    x = 112,789,755.12

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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.