Home / 113,990.31-157,326.17-66,271.34

Finding the Fourth Proportional to 113,990.31, 157,326.17 and 66,271.34

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Solution

The fourth proportional to 113,990.31, 157,326.17 and 66,271.34 is: 91,465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,990.31 : 157,326.17 = 66,271.34 : x
  2. Step 2: Convert to fraction form
    113,990.31/157,326.17 = 66,271.34/x
  3. Step 3: Cross multiply
    113,990.31x = 157,326.17 × 66,271.34
  4. Step 4: Simplify right side
    113,990.31x = 10,426,216,164.93
  5. Step 5: Solve for x
    x = 10,426,216,164.93/113,990.31
  6. Step 6: Final answer
    x = 91,465.81

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1.5x scale

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.