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Finding the Fourth Proportional to 150,018.80, 207,026.01 and 85,486.20

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Solution

The fourth proportional to 150,018.80, 207,026.01 and 85,486.20 is: 117,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,018.80 : 207,026.01 = 85,486.20 : x
  2. Step 2: Convert to fraction form
    150,018.80/207,026.01 = 85,486.20/x
  3. Step 3: Cross multiply
    150,018.80x = 207,026.01 × 85,486.20
  4. Step 4: Simplify right side
    150,018.80x = 17,697,866,119.71
  5. Step 5: Solve for x
    x = 17,697,866,119.71/150,018.80
  6. Step 6: Final answer
    x = 117,970.99

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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.