Home / 145,659.18-201,013.47-81,999.30

Finding the Fourth Proportional to 145,659.18, 201,013.47 and 81,999.30

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Solution

The fourth proportional to 145,659.18, 201,013.47 and 81,999.30 is: 113,161.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,659.18 : 201,013.47 = 81,999.30 : x
  2. Step 2: Convert to fraction form
    145,659.18/201,013.47 = 81,999.30/x
  3. Step 3: Cross multiply
    145,659.18x = 201,013.47 × 81,999.30
  4. Step 4: Simplify right side
    145,659.18x = 16,482,963,830.57
  5. Step 5: Solve for x
    x = 16,482,963,830.57/145,659.18
  6. Step 6: Final answer
    x = 113,161.17

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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.