Home / 138,154,661.58-190,670,151.66-78,630,430.95

Finding the Fourth Proportional to 138,154,661.58, 190,670,151.66 and 78,630,430.95

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Solution

The fourth proportional to 138,154,661.58, 190,670,151.66 and 78,630,430.95 is: 108,519,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,154,661.58 : 190,670,151.66 = 78,630,430.95 : x
  2. Step 2: Convert to fraction form
    138,154,661.58/190,670,151.66 = 78,630,430.95/x
  3. Step 3: Cross multiply
    138,154,661.58x = 190,670,151.66 × 78,630,430.95
  4. Step 4: Simplify right side
    138,154,661.58x = 14,992,476,194,327,658
  5. Step 5: Solve for x
    x = 14,992,476,194,327,658/138,154,661.58
  6. Step 6: Final answer
    x = 108,519,510.11

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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.