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Finding the Fourth Proportional to 158,712, 238,134.75 and 98,790.57

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Solution

The fourth proportional to 158,712, 238,134.75 and 98,790.57 is: 148,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,712 : 238,134.75 = 98,790.57 : x
  2. Step 2: Convert to fraction form
    158,712/238,134.75 = 98,790.57/x
  3. Step 3: Cross multiply
    158,712x = 238,134.75 × 98,790.57
  4. Step 4: Simplify right side
    158,712x = 23,525,467,689.31
  5. Step 5: Solve for x
    x = 23,525,467,689.31/158,712
  6. Step 6: Final answer
    x = 148,227.40

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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.