Home / 145,908.13-201,353.16-78,840.13

Finding the Fourth Proportional to 145,908.13, 201,353.16 and 78,840.13

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Solution

The fourth proportional to 145,908.13, 201,353.16 and 78,840.13 is: 108,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,908.13 : 201,353.16 = 78,840.13 : x
  2. Step 2: Convert to fraction form
    145,908.13/201,353.16 = 78,840.13/x
  3. Step 3: Cross multiply
    145,908.13x = 201,353.16 × 78,840.13
  4. Step 4: Simplify right side
    145,908.13x = 15,874,709,310.31
  5. Step 5: Solve for x
    x = 15,874,709,310.31/145,908.13
  6. Step 6: Final answer
    x = 108,799.35

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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.