Home / 115,386.40-159,178.63-75,085.46

Finding the Fourth Proportional to 115,386.40, 159,178.63 and 75,085.46

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Solution

The fourth proportional to 115,386.40, 159,178.63 and 75,085.46 is: 103,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,386.40 : 159,178.63 = 75,085.46 : x
  2. Step 2: Convert to fraction form
    115,386.40/159,178.63 = 75,085.46/x
  3. Step 3: Cross multiply
    115,386.40x = 159,178.63 × 75,085.46
  4. Step 4: Simplify right side
    115,386.40x = 11,952,000,655.72
  5. Step 5: Solve for x
    x = 11,952,000,655.72/115,386.40
  6. Step 6: Final answer
    x = 103,582.40

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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.