Home / 142,645.10-213,847.23-89,938.40

Finding the Fourth Proportional to 142,645.10, 213,847.23 and 89,938.40

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Solution

The fourth proportional to 142,645.10, 213,847.23 and 89,938.40 is: 134,831.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,645.10 : 213,847.23 = 89,938.40 : x
  2. Step 2: Convert to fraction form
    142,645.10/213,847.23 = 89,938.40/x
  3. Step 3: Cross multiply
    142,645.10x = 213,847.23 × 89,938.40
  4. Step 4: Simplify right side
    142,645.10x = 19,233,077,710.63
  5. Step 5: Solve for x
    x = 19,233,077,710.63/142,645.10
  6. Step 6: Final answer
    x = 134,831.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.