Home / 189,437.47-261,421.98-103,395.61

Finding the Fourth Proportional to 189,437.47, 261,421.98 and 103,395.61

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Solution

The fourth proportional to 189,437.47, 261,421.98 and 103,395.61 is: 142,685.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,437.47 : 261,421.98 = 103,395.61 : x
  2. Step 2: Convert to fraction form
    189,437.47/261,421.98 = 103,395.61/x
  3. Step 3: Cross multiply
    189,437.47x = 261,421.98 × 103,395.61
  4. Step 4: Simplify right side
    189,437.47x = 27,029,885,089.51
  5. Step 5: Solve for x
    x = 27,029,885,089.51/189,437.47
  6. Step 6: Final answer
    x = 142,685.00

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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.