Home / 145,967,769.19-201,436,055.13-78,986,727.64

Finding the Fourth Proportional to 145,967,769.19, 201,436,055.13 and 78,986,727.64

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Solution

The fourth proportional to 145,967,769.19, 201,436,055.13 and 78,986,727.64 is: 109,001,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,769.19 : 201,436,055.13 = 78,986,727.64 : x
  2. Step 2: Convert to fraction form
    145,967,769.19/201,436,055.13 = 78,986,727.64/x
  3. Step 3: Cross multiply
    145,967,769.19x = 201,436,055.13 × 78,986,727.64
  4. Step 4: Simplify right side
    145,967,769.19x = 15,910,774,823,429,334
  5. Step 5: Solve for x
    x = 15,910,774,823,429,334/145,967,769.19
  6. Step 6: Final answer
    x = 109,001,972.91

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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.