Home / 157,127,921.77-216,843,289.91-87,513,333.61

Finding the Fourth Proportional to 157,127,921.77, 216,843,289.91 and 87,513,333.61

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Solution

The fourth proportional to 157,127,921.77, 216,843,289.91 and 87,513,333.61 is: 120,772,164.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,127,921.77 : 216,843,289.91 = 87,513,333.61 : x
  2. Step 2: Convert to fraction form
    157,127,921.77/216,843,289.91 = 87,513,333.61/x
  3. Step 3: Cross multiply
    157,127,921.77x = 216,843,289.91 × 87,513,333.61
  4. Step 4: Simplify right side
    157,127,921.77x = 18,976,679,170,546,212
  5. Step 5: Solve for x
    x = 18,976,679,170,546,212/157,127,921.77
  6. Step 6: Final answer
    x = 120,772,164.21

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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.