Home / 112,688.88-155,344.98-85,784.52

Finding the Fourth Proportional to 112,688.88, 155,344.98 and 85,784.52

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Solution

The fourth proportional to 112,688.88, 155,344.98 and 85,784.52 is: 118,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.88 : 155,344.98 = 85,784.52 : x
  2. Step 2: Convert to fraction form
    112,688.88/155,344.98 = 85,784.52/x
  3. Step 3: Cross multiply
    112,688.88x = 155,344.98 × 85,784.52
  4. Step 4: Simplify right side
    112,688.88x = 13,326,194,543.71
  5. Step 5: Solve for x
    x = 13,326,194,543.71/112,688.88
  6. Step 6: Final answer
    x = 118,256.52

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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.