Home / 137,064,451.16-189,118,344.90-81,281,525.20

Finding the Fourth Proportional to 137,064,451.16, 189,118,344.90 and 81,281,525.20

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Solution

The fourth proportional to 137,064,451.16, 189,118,344.90 and 81,281,525.20 is: 112,150,359.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,064,451.16 : 189,118,344.90 = 81,281,525.20 : x
  2. Step 2: Convert to fraction form
    137,064,451.16/189,118,344.90 = 81,281,525.20/x
  3. Step 3: Cross multiply
    137,064,451.16x = 189,118,344.90 × 81,281,525.20
  4. Step 4: Simplify right side
    137,064,451.16x = 15,371,827,516,771,642
  5. Step 5: Solve for x
    x = 15,371,827,516,771,642/137,064,451.16
  6. Step 6: Final answer
    x = 112,150,359.82

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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.