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Finding the Fourth Proportional to 158,265.84, 218,412 and 86,651.04

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Solution

The fourth proportional to 158,265.84, 218,412 and 86,651.04 is: 119,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,265.84 : 218,412 = 86,651.04 : x
  2. Step 2: Convert to fraction form
    158,265.84/218,412 = 86,651.04/x
  3. Step 3: Cross multiply
    158,265.84x = 218,412 × 86,651.04
  4. Step 4: Simplify right side
    158,265.84x = 18,925,626,948.48
  5. Step 5: Solve for x
    x = 18,925,626,948.48/158,265.84
  6. Step 6: Final answer
    x = 119,581.25

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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.