Home / 113,142.61-156,119.44-65,386.74

Finding the Fourth Proportional to 113,142.61, 156,119.44 and 65,386.74

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Solution

The fourth proportional to 113,142.61, 156,119.44 and 65,386.74 is: 90,223.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,142.61 : 156,119.44 = 65,386.74 : x
  2. Step 2: Convert to fraction form
    113,142.61/156,119.44 = 65,386.74/x
  3. Step 3: Cross multiply
    113,142.61x = 156,119.44 × 65,386.74
  4. Step 4: Simplify right side
    113,142.61x = 10,208,141,232.23
  5. Step 5: Solve for x
    x = 10,208,141,232.23/113,142.61
  6. Step 6: Final answer
    x = 90,223.67

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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.