Home / 138,757,966.72-191,487,534.40-76,879,280

Finding the Fourth Proportional to 138,757,966.72, 191,487,534.40 and 76,879,280

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Solution

The fourth proportional to 138,757,966.72, 191,487,534.40 and 76,879,280 is: 106,094,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,757,966.72 : 191,487,534.40 = 76,879,280 : x
  2. Step 2: Convert to fraction form
    138,757,966.72/191,487,534.40 = 76,879,280/x
  3. Step 3: Cross multiply
    138,757,966.72x = 191,487,534.40 × 76,879,280
  4. Step 4: Simplify right side
    138,757,966.72x = 14,721,423,773,647,232
  5. Step 5: Solve for x
    x = 14,721,423,773,647,232/138,757,966.72
  6. Step 6: Final answer
    x = 106,094,259.82

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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.