Home / 105,289.81-145,306.95-59,360.78

Finding the Fourth Proportional to 105,289.81, 145,306.95 and 59,360.78

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Solution

The fourth proportional to 105,289.81, 145,306.95 and 59,360.78 is: 81,921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,289.81 : 145,306.95 = 59,360.78 : x
  2. Step 2: Convert to fraction form
    105,289.81/145,306.95 = 59,360.78/x
  3. Step 3: Cross multiply
    105,289.81x = 145,306.95 × 59,360.78
  4. Step 4: Simplify right side
    105,289.81x = 8,625,534,032.09
  5. Step 5: Solve for x
    x = 8,625,534,032.09/105,289.81
  6. Step 6: Final answer
    x = 81,921.83

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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.