Home / 130,929.48-180,699.54-79,931.52

Finding the Fourth Proportional to 130,929.48, 180,699.54 and 79,931.52

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Solution

The fourth proportional to 130,929.48, 180,699.54 and 79,931.52 is: 110,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,929.48 : 180,699.54 = 79,931.52 : x
  2. Step 2: Convert to fraction form
    130,929.48/180,699.54 = 79,931.52/x
  3. Step 3: Cross multiply
    130,929.48x = 180,699.54 × 79,931.52
  4. Step 4: Simplify right side
    130,929.48x = 14,443,588,895.50
  5. Step 5: Solve for x
    x = 14,443,588,895.50/130,929.48
  6. Step 6: Final answer
    x = 110,315.79

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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.