Home / 153,912,253.76-212,399,115.06-83,347,985.73

Finding the Fourth Proportional to 153,912,253.76, 212,399,115.06 and 83,347,985.73

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Solution

The fourth proportional to 153,912,253.76, 212,399,115.06 and 83,347,985.73 is: 115,020,331.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,912,253.76 : 212,399,115.06 = 83,347,985.73 : x
  2. Step 2: Convert to fraction form
    153,912,253.76/212,399,115.06 = 83,347,985.73/x
  3. Step 3: Cross multiply
    153,912,253.76x = 212,399,115.06 × 83,347,985.73
  4. Step 4: Simplify right side
    153,912,253.76x = 17,703,038,411,085,510
  5. Step 5: Solve for x
    x = 17,703,038,411,085,510/153,912,253.76
  6. Step 6: Final answer
    x = 115,020,331.25

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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.