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Finding the Fourth Proportional to 147,587.86, 203,686.95 and 90,260.74

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Solution

The fourth proportional to 147,587.86, 203,686.95 and 90,260.74 is: 124,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,587.86 : 203,686.95 = 90,260.74 : x
  2. Step 2: Convert to fraction form
    147,587.86/203,686.95 = 90,260.74/x
  3. Step 3: Cross multiply
    147,587.86x = 203,686.95 × 90,260.74
  4. Step 4: Simplify right side
    147,587.86x = 18,384,934,835.34
  5. Step 5: Solve for x
    x = 18,384,934,835.34/147,587.86
  6. Step 6: Final answer
    x = 124,569.42

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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.