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Finding the Fourth Proportional to 158,508.32, 218,763.86 and 98,098.40

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Solution

The fourth proportional to 158,508.32, 218,763.86 and 98,098.40 is: 135,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,508.32 : 218,763.86 = 98,098.40 : x
  2. Step 2: Convert to fraction form
    158,508.32/218,763.86 = 98,098.40/x
  3. Step 3: Cross multiply
    158,508.32x = 218,763.86 × 98,098.40
  4. Step 4: Simplify right side
    158,508.32x = 21,460,384,643.82
  5. Step 5: Solve for x
    x = 21,460,384,643.82/158,508.32
  6. Step 6: Final answer
    x = 135,389.64

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1.5x scale

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.