Home / 149,431,931.09-206,221,192.76-86,703,292.25

Finding the Fourth Proportional to 149,431,931.09, 206,221,192.76 and 86,703,292.25

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Solution

The fourth proportional to 149,431,931.09, 206,221,192.76 and 86,703,292.25 is: 119,653,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,431,931.09 : 206,221,192.76 = 86,703,292.25 : x
  2. Step 2: Convert to fraction form
    149,431,931.09/206,221,192.76 = 86,703,292.25/x
  3. Step 3: Cross multiply
    149,431,931.09x = 206,221,192.76 × 86,703,292.25
  4. Step 4: Simplify right side
    149,431,931.09x = 17,880,056,343,580,348
  5. Step 5: Solve for x
    x = 17,880,056,343,580,348/149,431,931.09
  6. Step 6: Final answer
    x = 119,653,518.58

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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.