Home / 189,451,008.60-284,176,512.90-128,229,005.40

Finding the Fourth Proportional to 189,451,008.60, 284,176,512.90 and 128,229,005.40

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Solution

The fourth proportional to 189,451,008.60, 284,176,512.90 and 128,229,005.40 is: 192,343,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,451,008.60 : 284,176,512.90 = 128,229,005.40 : x
  2. Step 2: Convert to fraction form
    189,451,008.60/284,176,512.90 = 128,229,005.40/x
  3. Step 3: Cross multiply
    189,451,008.60x = 284,176,512.90 × 128,229,005.40
  4. Step 4: Simplify right side
    189,451,008.60x = 36,439,671,607,207,272
  5. Step 5: Solve for x
    x = 36,439,671,607,207,272/189,451,008.60
  6. Step 6: Final answer
    x = 192,343,508.10

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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.