Home / 129,024,009.60-193,536,014.40-72,282,940.80

Finding the Fourth Proportional to 129,024,009.60, 193,536,014.40 and 72,282,940.80

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Solution

The fourth proportional to 129,024,009.60, 193,536,014.40 and 72,282,940.80 is: 108,424,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,024,009.60 : 193,536,014.40 = 72,282,940.80 : x
  2. Step 2: Convert to fraction form
    129,024,009.60/193,536,014.40 = 72,282,940.80/x
  3. Step 3: Cross multiply
    129,024,009.60x = 193,536,014.40 × 72,282,940.80
  4. Step 4: Simplify right side
    129,024,009.60x = 13,989,352,271,543,148
  5. Step 5: Solve for x
    x = 13,989,352,271,543,148/129,024,009.60
  6. Step 6: Final answer
    x = 108,424,411.20

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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.