Home / 250,020,005.20-375,030,007.80-129,087,653.20

Finding the Fourth Proportional to 250,020,005.20, 375,030,007.80 and 129,087,653.20

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Solution

The fourth proportional to 250,020,005.20, 375,030,007.80 and 129,087,653.20 is: 193,631,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,020,005.20 : 375,030,007.80 = 129,087,653.20 : x
  2. Step 2: Convert to fraction form
    250,020,005.20/375,030,007.80 = 129,087,653.20/x
  3. Step 3: Cross multiply
    250,020,005.20x = 375,030,007.80 × 129,087,653.20
  4. Step 4: Simplify right side
    250,020,005.20x = 48,411,743,586,479,696
  5. Step 5: Solve for x
    x = 48,411,743,586,479,696/250,020,005.20
  6. Step 6: Final answer
    x = 193,631,479.80

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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.