Home / 137,708,642.16-190,030,493.73-78,973,782.84

Finding the Fourth Proportional to 137,708,642.16, 190,030,493.73 and 78,973,782.84

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Solution

The fourth proportional to 137,708,642.16, 190,030,493.73 and 78,973,782.84 is: 108,979,557.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,708,642.16 : 190,030,493.73 = 78,973,782.84 : x
  2. Step 2: Convert to fraction form
    137,708,642.16/190,030,493.73 = 78,973,782.84/x
  3. Step 3: Cross multiply
    137,708,642.16x = 190,030,493.73 × 78,973,782.84
  4. Step 4: Simplify right side
    137,708,642.16x = 15,007,426,944,662,532
  5. Step 5: Solve for x
    x = 15,007,426,944,662,532/137,708,642.16
  6. Step 6: Final answer
    x = 108,979,557.92

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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.