Home / 145,957.66-201,425.07-81,426.40

Finding the Fourth Proportional to 145,957.66, 201,425.07 and 81,426.40

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Solution

The fourth proportional to 145,957.66, 201,425.07 and 81,426.40 is: 112,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,957.66 : 201,425.07 = 81,426.40 : x
  2. Step 2: Convert to fraction form
    145,957.66/201,425.07 = 81,426.40/x
  3. Step 3: Cross multiply
    145,957.66x = 201,425.07 × 81,426.40
  4. Step 4: Simplify right side
    145,957.66x = 16,401,318,319.85
  5. Step 5: Solve for x
    x = 16,401,318,319.85/145,957.66
  6. Step 6: Final answer
    x = 112,370.38

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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.