Home / 98,639.20-148,117.20-91,362.40

Finding the Fourth Proportional to 98,639.20, 148,117.20 and 91,362.40

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Solution

The fourth proportional to 98,639.20, 148,117.20 and 91,362.40 is: 137,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,639.20 : 148,117.20 = 91,362.40 : x
  2. Step 2: Convert to fraction form
    98,639.20/148,117.20 = 91,362.40/x
  3. Step 3: Cross multiply
    98,639.20x = 148,117.20 × 91,362.40
  4. Step 4: Simplify right side
    98,639.20x = 13,532,342,873.28
  5. Step 5: Solve for x
    x = 13,532,342,873.28/98,639.20
  6. Step 6: Final answer
    x = 137,190.31

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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.