Home / 113,386.84-156,474.99-64,987.72

Finding the Fourth Proportional to 113,386.84, 156,474.99 and 64,987.72

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Solution

The fourth proportional to 113,386.84, 156,474.99 and 64,987.72 is: 89,683.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,386.84 : 156,474.99 = 64,987.72 : x
  2. Step 2: Convert to fraction form
    113,386.84/156,474.99 = 64,987.72/x
  3. Step 3: Cross multiply
    113,386.84x = 156,474.99 × 64,987.72
  4. Step 4: Simplify right side
    113,386.84x = 10,168,952,837.12
  5. Step 5: Solve for x
    x = 10,168,952,837.12/113,386.84
  6. Step 6: Final answer
    x = 89,683.71

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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.