Home / 90,430.23-134,792.34-83,701.56

Finding the Fourth Proportional to 90,430.23, 134,792.34 and 83,701.56

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Solution

The fourth proportional to 90,430.23, 134,792.34 and 83,701.56 is: 124,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,430.23 : 134,792.34 = 83,701.56 : x
  2. Step 2: Convert to fraction form
    90,430.23/134,792.34 = 83,701.56/x
  3. Step 3: Cross multiply
    90,430.23x = 134,792.34 × 83,701.56
  4. Step 4: Simplify right side
    90,430.23x = 11,282,329,134.05
  5. Step 5: Solve for x
    x = 11,282,329,134.05/90,430.23
  6. Step 6: Final answer
    x = 124,762.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.