Home / 137,666,440.72-189,973,869.12-74,941,233.04

Finding the Fourth Proportional to 137,666,440.72, 189,973,869.12 and 74,941,233.04

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Solution

The fourth proportional to 137,666,440.72, 189,973,869.12 and 74,941,233.04 is: 103,415,733.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,666,440.72 : 189,973,869.12 = 74,941,233.04 : x
  2. Step 2: Convert to fraction form
    137,666,440.72/189,973,869.12 = 74,941,233.04/x
  3. Step 3: Cross multiply
    137,666,440.72x = 189,973,869.12 × 74,941,233.04
  4. Step 4: Simplify right side
    137,666,440.72x = 14,236,875,997,232,382
  5. Step 5: Solve for x
    x = 14,236,875,997,232,382/137,666,440.72
  6. Step 6: Final answer
    x = 103,415,733.88

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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.