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Finding the Fourth Proportional to 98,862.20, 148,293.30 and 86,809.40

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Solution

The fourth proportional to 98,862.20, 148,293.30 and 86,809.40 is: 130,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,862.20 : 148,293.30 = 86,809.40 : x
  2. Step 2: Convert to fraction form
    98,862.20/148,293.30 = 86,809.40/x
  3. Step 3: Cross multiply
    98,862.20x = 148,293.30 × 86,809.40
  4. Step 4: Simplify right side
    98,862.20x = 12,873,252,397.02
  5. Step 5: Solve for x
    x = 12,873,252,397.02/98,862.20
  6. Step 6: Final answer
    x = 130,214.10

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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.