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Finding the Fourth Proportional to 98,955.40, 148,214.40 and 81,459.40

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Solution

The fourth proportional to 98,955.40, 148,214.40 and 81,459.40 is: 122,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,955.40 : 148,214.40 = 81,459.40 : x
  2. Step 2: Convert to fraction form
    98,955.40/148,214.40 = 81,459.40/x
  3. Step 3: Cross multiply
    98,955.40x = 148,214.40 × 81,459.40
  4. Step 4: Simplify right side
    98,955.40x = 12,073,456,095.36
  5. Step 5: Solve for x
    x = 12,073,456,095.36/98,955.40
  6. Step 6: Final answer
    x = 122,009.07

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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.