Home / 147,238.74-220,421.79-90,897.69

Finding the Fourth Proportional to 147,238.74, 220,421.79 and 90,897.69

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Solution

The fourth proportional to 147,238.74, 220,421.79 and 90,897.69 is: 136,077.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,238.74 : 220,421.79 = 90,897.69 : x
  2. Step 2: Convert to fraction form
    147,238.74/220,421.79 = 90,897.69/x
  3. Step 3: Cross multiply
    147,238.74x = 220,421.79 × 90,897.69
  4. Step 4: Simplify right side
    147,238.74x = 20,035,831,536.67
  5. Step 5: Solve for x
    x = 20,035,831,536.67/147,238.74
  6. Step 6: Final answer
    x = 136,077.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.