Home / 98,579.40-147,869.10-72,335.40

Finding the Fourth Proportional to 98,579.40, 147,869.10 and 72,335.40

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Solution

The fourth proportional to 98,579.40, 147,869.10 and 72,335.40 is: 108,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,579.40 : 147,869.10 = 72,335.40 : x
  2. Step 2: Convert to fraction form
    98,579.40/147,869.10 = 72,335.40/x
  3. Step 3: Cross multiply
    98,579.40x = 147,869.10 × 72,335.40
  4. Step 4: Simplify right side
    98,579.40x = 10,696,170,496.14
  5. Step 5: Solve for x
    x = 10,696,170,496.14/98,579.40
  6. Step 6: Final answer
    x = 108,503.10

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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.