Home / 126,239,877.60-189,359,816.40-72,492,165.60

Finding the Fourth Proportional to 126,239,877.60, 189,359,816.40 and 72,492,165.60

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Solution

The fourth proportional to 126,239,877.60, 189,359,816.40 and 72,492,165.60 is: 108,738,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,239,877.60 : 189,359,816.40 = 72,492,165.60 : x
  2. Step 2: Convert to fraction form
    126,239,877.60/189,359,816.40 = 72,492,165.60/x
  3. Step 3: Cross multiply
    126,239,877.60x = 189,359,816.40 × 72,492,165.60
  4. Step 4: Simplify right side
    126,239,877.60x = 13,727,103,168,454,396
  5. Step 5: Solve for x
    x = 13,727,103,168,454,396/126,239,877.60
  6. Step 6: Final answer
    x = 108,738,248.40

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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.