Home / 105,388.67-145,407.07-62,931.71

Finding the Fourth Proportional to 105,388.67, 145,407.07 and 62,931.71

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Solution

The fourth proportional to 105,388.67, 145,407.07 and 62,931.71 is: 86,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,388.67 : 145,407.07 = 62,931.71 : x
  2. Step 2: Convert to fraction form
    105,388.67/145,407.07 = 62,931.71/x
  3. Step 3: Cross multiply
    105,388.67x = 145,407.07 × 62,931.71
  4. Step 4: Simplify right side
    105,388.67x = 9,150,715,561.19
  5. Step 5: Solve for x
    x = 9,150,715,561.19/105,388.67
  6. Step 6: Final answer
    x = 86,828.27

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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.