Home / 137,586,643.72-189,863,875.70-74,862,999.88

Finding the Fourth Proportional to 137,586,643.72, 189,863,875.70 and 74,862,999.88

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Solution

The fourth proportional to 137,586,643.72, 189,863,875.70 and 74,862,999.88 is: 103,307,842.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,586,643.72 : 189,863,875.70 = 74,862,999.88 : x
  2. Step 2: Convert to fraction form
    137,586,643.72/189,863,875.70 = 74,862,999.88/x
  3. Step 3: Cross multiply
    137,586,643.72x = 189,863,875.70 × 74,862,999.88
  4. Step 4: Simplify right side
    137,586,643.72x = 14,213,779,303,745,434
  5. Step 5: Solve for x
    x = 14,213,779,303,745,434/137,586,643.72
  6. Step 6: Final answer
    x = 103,307,842.39

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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.