Home / 145,017,368.64-200,126,519.64-78,939,766.08

Finding the Fourth Proportional to 145,017,368.64, 200,126,519.64 and 78,939,766.08

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Solution

The fourth proportional to 145,017,368.64, 200,126,519.64 and 78,939,766.08 is: 108,938,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,368.64 : 200,126,519.64 = 78,939,766.08 : x
  2. Step 2: Convert to fraction form
    145,017,368.64/200,126,519.64 = 78,939,766.08/x
  3. Step 3: Cross multiply
    145,017,368.64x = 200,126,519.64 × 78,939,766.08
  4. Step 4: Simplify right side
    145,017,368.64x = 15,797,940,646,786,124
  5. Step 5: Solve for x
    x = 15,797,940,646,786,124/145,017,368.64
  6. Step 6: Final answer
    x = 108,938,265.77

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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.