Home / 153,382,752.45-211,673,421.21-90,712,572.54

Finding the Fourth Proportional to 153,382,752.45, 211,673,421.21 and 90,712,572.54

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Solution

The fourth proportional to 153,382,752.45, 211,673,421.21 and 90,712,572.54 is: 125,186,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,382,752.45 : 211,673,421.21 = 90,712,572.54 : x
  2. Step 2: Convert to fraction form
    153,382,752.45/211,673,421.21 = 90,712,572.54/x
  3. Step 3: Cross multiply
    153,382,752.45x = 211,673,421.21 × 90,712,572.54
  4. Step 4: Simplify right side
    153,382,752.45x = 19,201,440,576,302,100
  5. Step 5: Solve for x
    x = 19,201,440,576,302,100/153,382,752.45
  6. Step 6: Final answer
    x = 125,186,438.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.