Home / 225,142,645.57-310,700,023.95-129,720,417.28

Finding the Fourth Proportional to 225,142,645.57, 310,700,023.95 and 129,720,417.28

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Solution

The fourth proportional to 225,142,645.57, 310,700,023.95 and 129,720,417.28 is: 179,016,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,142,645.57 : 310,700,023.95 = 129,720,417.28 : x
  2. Step 2: Convert to fraction form
    225,142,645.57/310,700,023.95 = 129,720,417.28/x
  3. Step 3: Cross multiply
    225,142,645.57x = 310,700,023.95 × 129,720,417.28
  4. Step 4: Simplify right side
    225,142,645.57x = 40,304,136,756,975,520
  5. Step 5: Solve for x
    x = 40,304,136,756,975,520/225,142,645.57
  6. Step 6: Final answer
    x = 179,016,004.07

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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.