Home / 138,365,479.16-190,937,764.86-75,644,812.34

Finding the Fourth Proportional to 138,365,479.16, 190,937,764.86 and 75,644,812.34

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Solution

The fourth proportional to 138,365,479.16, 190,937,764.86 and 75,644,812.34 is: 104,386,234.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,365,479.16 : 190,937,764.86 = 75,644,812.34 : x
  2. Step 2: Convert to fraction form
    138,365,479.16/190,937,764.86 = 75,644,812.34/x
  3. Step 3: Cross multiply
    138,365,479.16x = 190,937,764.86 × 75,644,812.34
  4. Step 4: Simplify right side
    138,365,479.16x = 14,443,451,391,453,748
  5. Step 5: Solve for x
    x = 14,443,451,391,453,748/138,365,479.16
  6. Step 6: Final answer
    x = 104,386,234.77

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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.