Home / 138,712,198.95-191,421,309.02-75,130,956.30

Finding the Fourth Proportional to 138,712,198.95, 191,421,309.02 and 75,130,956.30

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Solution

The fourth proportional to 138,712,198.95, 191,421,309.02 and 75,130,956.30 is: 103,679,893.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,712,198.95 : 191,421,309.02 = 75,130,956.30 : x
  2. Step 2: Convert to fraction form
    138,712,198.95/191,421,309.02 = 75,130,956.30/x
  3. Step 3: Cross multiply
    138,712,198.95x = 191,421,309.02 × 75,130,956.30
  4. Step 4: Simplify right side
    138,712,198.95x = 14,381,666,002,494,760
  5. Step 5: Solve for x
    x = 14,381,666,002,494,760/138,712,198.95
  6. Step 6: Final answer
    x = 103,679,893.41

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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.