Home / 145,298,415.27-200,506,037.61-85,778,883.66

Finding the Fourth Proportional to 145,298,415.27, 200,506,037.61 and 85,778,883.66

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Solution

The fourth proportional to 145,298,415.27, 200,506,037.61 and 85,778,883.66 is: 118,371,449.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298,415.27 : 200,506,037.61 = 85,778,883.66 : x
  2. Step 2: Convert to fraction form
    145,298,415.27/200,506,037.61 = 85,778,883.66/x
  3. Step 3: Cross multiply
    145,298,415.27x = 200,506,037.61 × 85,778,883.66
  4. Step 4: Simplify right side
    145,298,415.27x = 17,199,184,073,275,774
  5. Step 5: Solve for x
    x = 17,199,184,073,275,774/145,298,415.27
  6. Step 6: Final answer
    x = 118,371,449.83

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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.