Home / 157,127,609.52-216,842,861.16-87,513,021.36

Finding the Fourth Proportional to 157,127,609.52, 216,842,861.16 and 87,513,021.36

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Solution

The fourth proportional to 157,127,609.52, 216,842,861.16 and 87,513,021.36 is: 120,771,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,127,609.52 : 216,842,861.16 = 87,513,021.36 : x
  2. Step 2: Convert to fraction form
    157,127,609.52/216,842,861.16 = 87,513,021.36/x
  3. Step 3: Cross multiply
    157,127,609.52x = 216,842,861.16 × 87,513,021.36
  4. Step 4: Simplify right side
    157,127,609.52x = 18,976,573,940,458,592
  5. Step 5: Solve for x
    x = 18,976,573,940,458,592/157,127,609.52
  6. Step 6: Final answer
    x = 120,771,734.51

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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.