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Finding the Fourth Proportional to 101,678.73, 140,300.16 and 63,432.20

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Solution

The fourth proportional to 101,678.73, 140,300.16 and 63,432.20 is: 87,526.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,678.73 : 140,300.16 = 63,432.20 : x
  2. Step 2: Convert to fraction form
    101,678.73/140,300.16 = 63,432.20/x
  3. Step 3: Cross multiply
    101,678.73x = 140,300.16 × 63,432.20
  4. Step 4: Simplify right side
    101,678.73x = 8,899,547,809.15
  5. Step 5: Solve for x
    x = 8,899,547,809.15/101,678.73
  6. Step 6: Final answer
    x = 87,526.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.