Home / 145,972.38-218,853.48-89,696.21

Finding the Fourth Proportional to 145,972.38, 218,853.48 and 89,696.21

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Solution

The fourth proportional to 145,972.38, 218,853.48 and 89,696.21 is: 134,479.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,972.38 : 218,853.48 = 89,696.21 : x
  2. Step 2: Convert to fraction form
    145,972.38/218,853.48 = 89,696.21/x
  3. Step 3: Cross multiply
    145,972.38x = 218,853.48 × 89,696.21
  4. Step 4: Simplify right side
    145,972.38x = 19,630,328,971.61
  5. Step 5: Solve for x
    x = 19,630,328,971.61/145,972.38
  6. Step 6: Final answer
    x = 134,479.75

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1.5x scale

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.