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Finding the Fourth Proportional to 98,576.40, 147,864.60 and 72,332.40

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Solution

The fourth proportional to 98,576.40, 147,864.60 and 72,332.40 is: 108,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,576.40 : 147,864.60 = 72,332.40 : x
  2. Step 2: Convert to fraction form
    98,576.40/147,864.60 = 72,332.40/x
  3. Step 3: Cross multiply
    98,576.40x = 147,864.60 × 72,332.40
  4. Step 4: Simplify right side
    98,576.40x = 10,695,401,393.04
  5. Step 5: Solve for x
    x = 10,695,401,393.04/98,576.40
  6. Step 6: Final answer
    x = 108,498.60

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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.