Home / 145,162,911.40-217,744,367.10-128,156,799.40

Finding the Fourth Proportional to 145,162,911.40, 217,744,367.10 and 128,156,799.40

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Solution

The fourth proportional to 145,162,911.40, 217,744,367.10 and 128,156,799.40 is: 192,235,199.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162,911.40 : 217,744,367.10 = 128,156,799.40 : x
  2. Step 2: Convert to fraction form
    145,162,911.40/217,744,367.10 = 128,156,799.40/x
  3. Step 3: Cross multiply
    145,162,911.40x = 217,744,367.10 × 128,156,799.40
  4. Step 4: Simplify right side
    145,162,911.40x = 27,905,421,174,914,660
  5. Step 5: Solve for x
    x = 27,905,421,174,914,660/145,162,911.40
  6. Step 6: Final answer
    x = 192,235,199.10

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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.