Home / 113,133.06-156,088.47-65,368.98

Finding the Fourth Proportional to 113,133.06, 156,088.47 and 65,368.98

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Solution

The fourth proportional to 113,133.06, 156,088.47 and 65,368.98 is: 90,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,133.06 : 156,088.47 = 65,368.98 : x
  2. Step 2: Convert to fraction form
    113,133.06/156,088.47 = 65,368.98/x
  3. Step 3: Cross multiply
    113,133.06x = 156,088.47 × 65,368.98
  4. Step 4: Simplify right side
    113,133.06x = 10,203,344,073.66
  5. Step 5: Solve for x
    x = 10,203,344,073.66/113,133.06
  6. Step 6: Final answer
    x = 90,188.88

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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.