Home / 219,128.04-328,543.74-85,925.16

Finding the Fourth Proportional to 219,128.04, 328,543.74 and 85,925.16

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Solution

The fourth proportional to 219,128.04, 328,543.74 and 85,925.16 is: 128,829.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,128.04 : 328,543.74 = 85,925.16 : x
  2. Step 2: Convert to fraction form
    219,128.04/328,543.74 = 85,925.16/x
  3. Step 3: Cross multiply
    219,128.04x = 328,543.74 × 85,925.16
  4. Step 4: Simplify right side
    219,128.04x = 28,230,173,426.50
  5. Step 5: Solve for x
    x = 28,230,173,426.50/219,128.04
  6. Step 6: Final answer
    x = 128,829.58

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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.