Home / 258,056.91-387,140.67-89,582.58

Finding the Fourth Proportional to 258,056.91, 387,140.67 and 89,582.58

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Solution

The fourth proportional to 258,056.91, 387,140.67 and 89,582.58 is: 134,393.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,056.91 : 387,140.67 = 89,582.58 : x
  2. Step 2: Convert to fraction form
    258,056.91/387,140.67 = 89,582.58/x
  3. Step 3: Cross multiply
    258,056.91x = 387,140.67 × 89,582.58
  4. Step 4: Simplify right side
    258,056.91x = 34,681,060,041.53
  5. Step 5: Solve for x
    x = 34,681,060,041.53/258,056.91
  6. Step 6: Final answer
    x = 134,393.07

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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.