Home / 112,655.19-155,471.69-64,911.63

Finding the Fourth Proportional to 112,655.19, 155,471.69 and 64,911.63

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Solution

The fourth proportional to 112,655.19, 155,471.69 and 64,911.63 is: 89,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,655.19 : 155,471.69 = 64,911.63 : x
  2. Step 2: Convert to fraction form
    112,655.19/155,471.69 = 64,911.63/x
  3. Step 3: Cross multiply
    112,655.19x = 155,471.69 × 64,911.63
  4. Step 4: Simplify right side
    112,655.19x = 10,091,920,492.20
  5. Step 5: Solve for x
    x = 10,091,920,492.20/112,655.19
  6. Step 6: Final answer
    x = 89,582.38

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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.