Home / 128,960,043.20-193,440,064.80-42,711,761.60

Finding the Fourth Proportional to 128,960,043.20, 193,440,064.80 and 42,711,761.60

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Solution

The fourth proportional to 128,960,043.20, 193,440,064.80 and 42,711,761.60 is: 64,067,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,043.20 : 193,440,064.80 = 42,711,761.60 : x
  2. Step 2: Convert to fraction form
    128,960,043.20/193,440,064.80 = 42,711,761.60/x
  3. Step 3: Cross multiply
    128,960,043.20x = 193,440,064.80 × 42,711,761.60
  4. Step 4: Simplify right side
    128,960,043.20x = 8,262,165,931,626,152
  5. Step 5: Solve for x
    x = 8,262,165,931,626,152/128,960,043.20
  6. Step 6: Final answer
    x = 64,067,642.40

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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.