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Finding the Fourth Proportional to 98,460.70, 147,689.94 and 66,792.30

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Solution

The fourth proportional to 98,460.70, 147,689.94 and 66,792.30 is: 100,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,460.70 : 147,689.94 = 66,792.30 : x
  2. Step 2: Convert to fraction form
    98,460.70/147,689.94 = 66,792.30/x
  3. Step 3: Cross multiply
    98,460.70x = 147,689.94 × 66,792.30
  4. Step 4: Simplify right side
    98,460.70x = 9,864,550,779.46
  5. Step 5: Solve for x
    x = 9,864,550,779.46/98,460.70
  6. Step 6: Final answer
    x = 100,187.70

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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.