Home / 138,710,986.89-191,421,387.96-75,985,708.01

Finding the Fourth Proportional to 138,710,986.89, 191,421,387.96 and 75,985,708.01

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Solution

The fourth proportional to 138,710,986.89, 191,421,387.96 and 75,985,708.01 is: 104,860,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710,986.89 : 191,421,387.96 = 75,985,708.01 : x
  2. Step 2: Convert to fraction form
    138,710,986.89/191,421,387.96 = 75,985,708.01/x
  3. Step 3: Cross multiply
    138,710,986.89x = 191,421,387.96 × 75,985,708.01
  4. Step 4: Simplify right side
    138,710,986.89x = 14,545,289,692,397,492
  5. Step 5: Solve for x
    x = 14,545,289,692,397,492/138,710,986.89
  6. Step 6: Final answer
    x = 104,860,400.88

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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.