Home / 158,929.76-219,329.16-87,316.40

Finding the Fourth Proportional to 158,929.76, 219,329.16 and 87,316.40

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Solution

The fourth proportional to 158,929.76, 219,329.16 and 87,316.40 is: 120,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,929.76 : 219,329.16 = 87,316.40 : x
  2. Step 2: Convert to fraction form
    158,929.76/219,329.16 = 87,316.40/x
  3. Step 3: Cross multiply
    158,929.76x = 219,329.16 × 87,316.40
  4. Step 4: Simplify right side
    158,929.76x = 19,151,032,666.22
  5. Step 5: Solve for x
    x = 19,151,032,666.22/158,929.76
  6. Step 6: Final answer
    x = 120,499.98

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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.