Home / 112,769,856.40-169,154,784.60-85,896,000.40

Finding the Fourth Proportional to 112,769,856.40, 169,154,784.60 and 85,896,000.40

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Solution

The fourth proportional to 112,769,856.40, 169,154,784.60 and 85,896,000.40 is: 128,844,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,769,856.40 : 169,154,784.60 = 85,896,000.40 : x
  2. Step 2: Convert to fraction form
    112,769,856.40/169,154,784.60 = 85,896,000.40/x
  3. Step 3: Cross multiply
    112,769,856.40x = 169,154,784.60 × 85,896,000.40
  4. Step 4: Simplify right side
    112,769,856.40x = 14,529,719,445,663,514
  5. Step 5: Solve for x
    x = 14,529,719,445,663,514/112,769,856.40
  6. Step 6: Final answer
    x = 128,844,000.60

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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.