Home / 210,653,863.36-290,575,218.48-139,127,182.72

Finding the Fourth Proportional to 210,653,863.36, 290,575,218.48 and 139,127,182.72

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Solution

The fourth proportional to 210,653,863.36, 290,575,218.48 and 139,127,182.72 is: 191,911,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,653,863.36 : 290,575,218.48 = 139,127,182.72 : x
  2. Step 2: Convert to fraction form
    210,653,863.36/290,575,218.48 = 139,127,182.72/x
  3. Step 3: Cross multiply
    210,653,863.36x = 290,575,218.48 × 139,127,182.72
  4. Step 4: Simplify right side
    210,653,863.36x = 40,426,911,515,370,880
  5. Step 5: Solve for x
    x = 40,426,911,515,370,880/210,653,863.36
  6. Step 6: Final answer
    x = 191,911,559.90

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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.