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Finding the Fourth Proportional to 98,417.80, 147,626.70 and 91,808.20

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Solution

The fourth proportional to 98,417.80, 147,626.70 and 91,808.20 is: 137,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,417.80 : 147,626.70 = 91,808.20 : x
  2. Step 2: Convert to fraction form
    98,417.80/147,626.70 = 91,808.20/x
  3. Step 3: Cross multiply
    98,417.80x = 147,626.70 × 91,808.20
  4. Step 4: Simplify right side
    98,417.80x = 13,553,341,598.94
  5. Step 5: Solve for x
    x = 13,553,341,598.94/98,417.80
  6. Step 6: Final answer
    x = 137,712.30

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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.