Home / 138,712,199.90-191,421,310.31-75,130,957.24

Finding the Fourth Proportional to 138,712,199.90, 191,421,310.31 and 75,130,957.24

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Solution

The fourth proportional to 138,712,199.90, 191,421,310.31 and 75,130,957.24 is: 103,679,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,712,199.90 : 191,421,310.31 = 75,130,957.24 : x
  2. Step 2: Convert to fraction form
    138,712,199.90/191,421,310.31 = 75,130,957.24/x
  3. Step 3: Cross multiply
    138,712,199.90x = 191,421,310.31 × 75,130,957.24
  4. Step 4: Simplify right side
    138,712,199.90x = 14,381,666,278,871,174
  5. Step 5: Solve for x
    x = 14,381,666,278,871,174/138,712,199.90
  6. Step 6: Final answer
    x = 103,679,894.70

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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.