Home / 156,988.02-216,638.73-89,011.20

Finding the Fourth Proportional to 156,988.02, 216,638.73 and 89,011.20

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Solution

The fourth proportional to 156,988.02, 216,638.73 and 89,011.20 is: 122,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.02 : 216,638.73 = 89,011.20 : x
  2. Step 2: Convert to fraction form
    156,988.02/216,638.73 = 89,011.20/x
  3. Step 3: Cross multiply
    156,988.02x = 216,638.73 × 89,011.20
  4. Step 4: Simplify right side
    156,988.02x = 19,283,273,323.78
  5. Step 5: Solve for x
    x = 19,283,273,323.78/156,988.02
  6. Step 6: Final answer
    x = 122,832.77

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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.