Home / 154,687,941.36-213,417,061.20-87,699,713.13

Finding the Fourth Proportional to 154,687,941.36, 213,417,061.20 and 87,699,713.13

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Solution

The fourth proportional to 154,687,941.36, 213,417,061.20 and 87,699,713.13 is: 120,995,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,687,941.36 : 213,417,061.20 = 87,699,713.13 : x
  2. Step 2: Convert to fraction form
    154,687,941.36/213,417,061.20 = 87,699,713.13/x
  3. Step 3: Cross multiply
    154,687,941.36x = 213,417,061.20 × 87,699,713.13
  4. Step 4: Simplify right side
    154,687,941.36x = 18,716,615,044,287,652
  5. Step 5: Solve for x
    x = 18,716,615,044,287,652/154,687,941.36
  6. Step 6: Final answer
    x = 120,995,954.05

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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.