Home / 158,730.84-219,050.64-87,109.20

Finding the Fourth Proportional to 158,730.84, 219,050.64 and 87,109.20

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Solution

The fourth proportional to 158,730.84, 219,050.64 and 87,109.20 is: 120,211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,730.84 : 219,050.64 = 87,109.20 : x
  2. Step 2: Convert to fraction form
    158,730.84/219,050.64 = 87,109.20/x
  3. Step 3: Cross multiply
    158,730.84x = 219,050.64 × 87,109.20
  4. Step 4: Simplify right side
    158,730.84x = 19,081,326,009.89
  5. Step 5: Solve for x
    x = 19,081,326,009.89/158,730.84
  6. Step 6: Final answer
    x = 120,211.84

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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.