Home / 156,985.02-216,634.59-89,008.20

Finding the Fourth Proportional to 156,985.02, 216,634.59 and 89,008.20

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Solution

The fourth proportional to 156,985.02, 216,634.59 and 89,008.20 is: 122,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.02 : 216,634.59 = 89,008.20 : x
  2. Step 2: Convert to fraction form
    156,985.02/216,634.59 = 89,008.20/x
  3. Step 3: Cross multiply
    156,985.02x = 216,634.59 × 89,008.20
  4. Step 4: Simplify right side
    156,985.02x = 19,282,254,913.64
  5. Step 5: Solve for x
    x = 19,282,254,913.64/156,985.02
  6. Step 6: Final answer
    x = 122,828.63

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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.