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Finding the Fourth Proportional to 101,430.10, 152,145.15 and 66,000.70

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Solution

The fourth proportional to 101,430.10, 152,145.15 and 66,000.70 is: 99,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,430.10 : 152,145.15 = 66,000.70 : x
  2. Step 2: Convert to fraction form
    101,430.10/152,145.15 = 66,000.70/x
  3. Step 3: Cross multiply
    101,430.10x = 152,145.15 × 66,000.70
  4. Step 4: Simplify right side
    101,430.10x = 10,041,686,401.61
  5. Step 5: Solve for x
    x = 10,041,686,401.61/101,430.10
  6. Step 6: Final answer
    x = 99,001.05

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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.